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HP0-P21 HP-UX 11iv3 Advanced System Administration

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HP0-P21 exam Dumps Source : HP-UX 11iv3 Advanced System Administration

Test Code : HP0-P21
Test title : HP-UX 11iv3 Advanced System Administration
Vendor title : HP
exam questions : 124 true Questions

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HP HP-UX 11iv3 Advanced System

evaluating Unix versions: AIX, HP-UX and Solaris | killexams.com true Questions and Pass4sure dumps

In my ultimate tip, I compiled an inventory of the desirable 50 Unix instructions. each of the commands I mentioned can subsist found on...

the top three Unix editions: Solaris, AIX and HP-UX. listed here, i'll stroll you during the history of these Unix flavors, focus on some their simple modifications and shut with a command desk comparison of vital tasks.

solar SolarisSolaris, sun's Unix version, changed into truly the successor of SunOS, going lower back to1992. SunOS become firstly in keeping with the BSD tang of Unix, whereas SunOS models 5.0 and later are in line with Unix device V liberate 4 (rebranded as Solaris).

How did this ensue? Let's trip additional returned in time. SunOS edition 1.0 became delivered in 1983 with assist for sun-1 and solar-2 techniques. version 2.0 became added in 1985 -- its declare to fame changed into digital file gadget (VFS) and NFS. In 1987, AT&T and sun announced that they would travail collectively on a project to merge gadget V and BSD into one release, in accordance with SVR4. Solaris 2.four was sun's first Sparc/x86 free up. The eventual release of SunOS changed into edition 4.1.four in November 1994. Solaris 7 become its first 64-bit extremely Sparc liberate and brought aboriginal pilot for file system metadata logging. Solaris 9, brought in 2002, delivered support for Solaris quantity manager and Linux capabilities. Solaris 10 changed into first introduced in 2005, which has a number of improvements, together with waiton for its novel ZFS file device, Solaris Containers and logical Domains.

Solaris is at the second up to version 10; the newest update became launched in October 2008. among its innovations is assist for paravirtualization, the space Solaris 10 is used as a visitor in Xen-based environments.

simple ameliorations and unique characteristics. Solaris is free and open source, disbursed through the OpenSolaris operating equipment. Solaris is a more command-line primarily based Unix working gear than HP-UX or AIX. As a pragmatic remember, it does not beget anything comparable to system Administration supervisor (SAM) on HP-UX or gadget administration Interface device (SMIT) on AIX. Solaris runs on Sparc and x86 environments. It likewise has the most recent file device round -- ZFS, which has made wonderful strides in fresh years, including the capacity to now consume it as its root file device. ZFS has the expertise to subsist the most efficient all-around Unix file system. Solaris has many the prerogative route to implement virtualization, together with Containers/zones, xVM Server, logical Domains and hardware partitioning.

Hewlett-Packard HP-UXHP-UX, Hewlett-Packard's Unix, turned into firstly according to gear V liberate 3. It originally ran completely on PA-RISC HP 9000 platform. edition 1 of HP-UX became launched in 1984. version 9, delivered its personality-based graphical user interface (GUI), SAM, from which one administrates the system. edition 10, introduced in 1995, introduced changes within the design of the device file and directory constitution, making it akin to AT&T SVR4. version 11 changed into delivered in 1997 and changed into HP's first release to support 64-bit addressing. In 2000, it became rebranded to 11i, when HP brought working environments, bundled organizations of layered applications for selected IT applications. In 2001, edition eleven.20 brought aid for Itanium programs. HP-UX turned into the primary Unix that used entry exploit Lists (ACLs) for file permissions and changed into additionally one of the crucial first to introduce constructed-in support for logical quantity supervisor. today, HP-UX makes consume of Veritas as its primary file gear due to the shut partnership between Veritas and HP. HP-UX is at the second up to free up 11iv3, update four.

basic changes and exciting features. HP-UX is the primary of the Unix systems to allow its purchasers to purchase selected working environments. for example, in case you are searching for its immoderate availability (HA) product Serviceguard, you might purchase the selected product that bundles in HA. HP-UX is the simplest version that uses a third-celebration file gadget -- Veritas (sun used to present this a long time ago). HP has many kinds of virtualization, including nPartitions, vPars, Integrity digital Machines (IVMs) and resource partitions. This does beget a bent to muddle some individuals as a result of there are so many selections. HP-UX runs on each HP 9000s and Integrity Itanium systems. HP-UX 11v3 can aid as much as 128 processor cores. HP-UX provides for a very mighty command line moreover its menu bases equipment, SAM. efficiency tuning using kctune is in lots of ways less complicated to what AIX and Solaris present.

IBM AIXAIX become brought by means of IBM in 1986. whereas it is based on Unix device V, it additionally has BSD roots and, more than some other flavor, is a hybrid of both. AIX is the primary OS to introduce a journaled file gadget (JFS). It become additionally the primary to beget an built-in logical extent manager (LVM). IBM first ported AIX to its RS/6000 platform in 1989. version 5L was a step forward unencumber brought in 2001 that offered for Linux affinity and logical partitioning with the Power4 servers. In 2004, AIX brought virtualization in AIX 5.three. advanced power Virtualization (APV) offered micro-partitioning, shared processor pools and Symmetric multi-threading. In 2007, IBM better its virtualization product, coinciding with the unlock of AIX 6.1 and the Power6 structure. It additionally rebranded APV to PowerVM. The AIX enhancements blanketed a variety of workload partitioning known as WPARs, which are similar to than Solaris zones/Containers but with stronger functionality. The latest free up is AIX 6.1.

primary adjustments and exciting qualities. IBM is greatly recognized as having the premiere virtualization product on the midrange, PowerVM. Some concurrent innovations consist of live utility mobility (permitting one to fail over working partitions devoid of taking downtime), energetic reminiscence Sharing and multiple shared processor pools. No other flavor of Unix can vaunt these virtualization characteristics, nor can they suit IBM's 40-12 months history of virtualization -- PowerVM has developed from mainframe/equipment z virtualization.

AIX runs handiest on IBM power methods -- without problems the most powerful of midrange Unix servers. IBM sells the fact that AIX runs exclusively on verve as a plus since it is utterly optimized on this architecture and it has a clear street map around which the company adheres to religiously. it'll even subsist referred to that you'll subsist able to shun both Linux and AIX partitions on this platform. Its LX86 virtualization add-on permits one to shun x86 Linux applications that don't appear to subsist ported to the energy architecture. AIX has always had an built-in logical volume manager, in contrast to different flavors that require add-on items. AIX is the best Unix that has continued to develop market share in concurrent years, partly on account of the capabilities of its energy hardware that continues to steer the container in reliably, availability and scalability.

Command reference comparison 

What are you trying to do? Solaris AIX HP-UX Specify order of identify server decision /and many others/nsswitch.conf /and so forth/netsvc.conf and so forth/nsswitch.conf Configure networking /and so on/nodename, /and so forth/netmasks, and so on/defaultrouter, ifconfig recommendation is to create consume of SMIT, as a result of ifconfig does not retailer adjustments, lsattr set_parms - preliminary, netconf file, ioscan be vigilant purchasable file systems ufs, zfs jfs, jfs2 hfs, VxFS Add zone to file systems growfs chfs extendfs look at character-based mostly admin GUI None. Admintool became retired years in the past. SMC (comparable to AIX's WebSM) is the GUI SMIT, smitty, WebSM SAM examine hardware adjustments prtconf lscfg, lsattr, prtconf ioscan, dmesg View swap spaceswap lsps swapinfo investigate file device info /and many others/vfstab /etc/file techniques /etc/fstab Share NFS proportionexportfs exportfs assess application and/or filesets pkginfo, pkgchk lslpp, lssrc swlist deploy software pkgadd smit install swinstall investigate oversight logs prtdiag errpt dmesg Tune the kernel prtctl and /and so on/gadget vmo, ioo, no, schedo, nfso, chdev kctune beginning/cease facilitiesSvcadm, svcs lssrc, stopsrc, startsrc continually initiated by means of scripts from init.d I.E. for network -- /and so forth/init.d/internet startInstall instruments drvconfig cfgmgr insf

about the creator: Ken Milberg is a programs consultant with two a long time of journey working with Unix and Linux techniques. he is a SearchEnterpriseLinux.com anticipate the consultants marketing consultant and columnist.

What did you account of this function? Write to SearchDataCenter.com's Matt Stansberry about your information center issues at  mstansberry@techtarget.com.  


Mixing windows and Linux: How carryout You manage choice? | killexams.com true Questions and Pass4sure dumps

Microsoft’s home windows working methods account for the greatest share of server spending within the statistics middle, however home windows is by means of no skill the most efficient betray in town: Linux’s market share in selected is turning out to subsist strongly. It’s transforming into as a result of in purple Hat enterprise Linux (RHEL) and SUSE Linux enterprise Server (SLES) there are as a minimum two distros that are considered as commercial enterprise equipped and suitable for the huge time, and additionally since it’s low-cost, manageable, respectable for virtualization and it runs the utility that many people are looking to use. there are many extra motives as well.

What that potential is that there will likely subsist many more “drastically mixed” statistics center environments (which means environments running a titanic variety of servers the consume of both windows and Linux) sooner or later than there had been in the past. windows-most efficient statistics centers, or ones which simplest shun the bizarre Linux server or two, will rotate into more and more infrequent.

however how carryout you exploit blended environments? operating different administration systems for each and every platform is inefficient and would drive many directors nuts. anyway, the entire point of a management system is to permit the monitoring and controlling of each crucial system in a solid from a separate console. now not from two or three.

greater On mixed Environments

Virtualization makes issues much more advanced: How carryout you exploit home windows and Linux servers which could subsist operating on physical servers or as virtual machines operating on Microsoft’s Hyper-V, VMware’s ESX, or the Xen hypervisor?

Competing administration choices

if you are coming from a home windows environment and relocating towards a combined atmosphere with the aid of imposing Linux, then you may already subsist the consume of Microsoft’s gear core administration system. gear center’s Operations supervisor 2007 module now includes (in beta) a trip Platform Extensions pack with support for:

  • HP-UX 11iv3 (PA-RISC and IA64)
  • solar Solaris 10 (SPARC and x86)
  • IBM AIX 5L V5.3, know-how degree 6, SP5 (PowerPC) and, vastly,
  • crimson Hat commercial enterprise Linux 5 Server
  • Novell SUSE Linux commercial enterprise Server 10 SP1
  • virtual machines are managed from gadget middle the usage of the virtual computing device supervisor 2008 (VMM) module, which additionally helps virtual machines operating on VMware’s ESX server in addition to Hyper-V. And VMM likewise integrates with VMware’s VI3 utility so that it may likewise subsist used to carry out VI3 management operations. as an example, it is feasible, from within VMM, to excite a VMotion operation which moves a operating VMware digital computing device from one actual host to a different devoid of stopping the digital computing device. (Microsoft at the second has no corresponding to VMotion —its quick Migration comprises stopping the virtual desktop for some seconds because it is moved to a novel host.)

    by means of competitors Novell presents its Zenworks management system, which contains computing device and mobile device administration in addition to administration features for here server structures:

  • NetWare(R) 5.1, NetWare 6 and NetWare 6.5
  • Novell Open commercial enterprise Server
  • home windows 2000 Server and home windows Server 2003
  • SUSE(R) Linux enterprise Server eight and 9
  • crimson Hat advanced Server 2.1 and red Hat enterprise Server 2.1
  • purple Hat traffic Linux AS 3 and four and crimson Hat commercial enterprise Linux ES three and four
  • Solaris 9
  • Microsoft’s favorite Linux Distribution

    each of those management systems permit the management of home windows and both SLES and RHEL, however Microsoft seems to wish the previous over the latter. Demonstrating this, the traffic signed a group of agreements with Novell in November 2006 to travail against enhanced interoperability between home windows and SLES in four areas:

  • virtualization
  • methods management
  • listing integration and id
  • workplace doc formats
  • The deal, which runs as a minimum unless 2012, has been handled with an outstanding deal of suspicion by means of many individuals, partly since it can effectively subsist construed as a means for Microsoft to rep a “pet” Linux distro which it may manage and consume to rep a far better understanding of Linux and consumers’ causes for wanting to consume it for its personal capabilities. The deal includes an agreement for Microsoft to forbear from taking criminal action against Novell’s purchasers for the usage of Linux (which Microsoft claims infringes a considerable number of of its patents,) and likewise includes Microsoft making funds to Novell (and therefore indirectly subsidizing SLES.) a fashion here's achieved is by route of purchasing support coupons from Novell, which Microsoft then sells on to its clients at a discount.

    one of the most top notch results of the agreement is that SLES 10 is now the simplest Linux distro collectively supported via the two businesses as a guest working gadget virtualized on Hyper-V, and windows Server 2008 is jointly supported when shun as a paravirtualized visitor on SLES the usage of the Xen hypervisor covered with the distro.

    “The interop settlement is alive and dealing …”

    despite the suspicion, many organizations view the interoperability agreement as a excellent step and are gay to Take skills of the advantages it presents. “The interop agreement is alive and dealing, and the proven fact that it is a protracted time epoch agreement is excellent news,” says Nick Leake, Director of Operations and Infrastructure at ITV, a UK-primarily based industrial broadcasting traffic which runs about 200 windows servers and one hundred SLES servers.

    ITV has taken competencies of the contract between Microsoft and Novell to buy discounted assist coupons for SLES, but Leake says this didn't beget an repercussion on his resolution to enforce SLES within the first vicinity. “We made the election 4 years ago, earlier than the Novell - Microsoft interop agreement,” he says. “We performed an contrast manner earlier than making the mindful determination to trip together with SUSE. They selected no longer to trip with red Hat as a result of they don’t beget the identical tryst degree with purchasers as SUSE, and when the Microsoft Novell deal got here along [it] easily confirmed that they had made the prerogative resolution.”

    Leake additionally says that the capacity to control SLES from within Microsoft’s system middle is very essential—although ITV opted to consume Novell’s Zenworks to manage both platforms. He says support for the working programs in each and every different’s virtual environments is additionally advisable.

    As Linux becomes increasingly authorised it’s doubtless that blended facts core environments will become more and more typical. What’s more, the traces between distinctive systems will become more blurred as virtualization—together with VMware’s vision of servers that will likewise subsist moved within an inside cloud and out to external cloud provider providers - and enhanced interoperability create it practicable to handle home windows and Linux servers—both actual and virtual—without rigor as computing components which can subsist provisioned and managed with the equal tools in the equal approach.


    HP's Nehalem-EX iron set for June arrival | killexams.com true Questions and Pass4sure dumps

    HP will launch its first wave of "beastie packing containers" according to Intel's "Nehalem-EX" Xeon 7500 processors later this month, in keeping with sources commonplace with HP's plans.

    There are three months when server makers customarily launch products: March, June, and September. And it appears devotion June is shaping up to subsist a really busy month for the large server avid gamers — chiefly the king of the server hill, Hewlett-Packard.

    As El Reg previously mentioned, HP grew to become up on the Nehalem-EX launch sustain in San Francisco this spring, showing off some machines devoid of covers and labels, and it wouldn't assure a excellent deal about its plans for this eight-core beast of a processor. undoubtedly, HP didn't need to overshadow the Integrity line of "Tukwila" Itanium 9300 blade machines it debuted on the conclusion of April, a month after Intel's Xeon 7500 changed into trotted out.

    (that you could examine these blade boxes here, rep the prefatory feeds and speeds there, and rep greater details on pricing of the excessive-conclusion, sixteen-socket Superdome 2, which isn't delivery unless October, here. presumably, there are 32- and perhaps even 64-socket versions of the Superdome 2 machines, lashing together two or 4 of the Superdome 2 blade chassis collectively using the sx3000 chipset's crossbar. after all, HP needs a titanic unhealthy Unix province to compete with IBM and Oracle/Fujitsu titanic iron).

    in the spell time, the market for machines with four or eight sockets in response to the x64 architecture is diminishing, but with server virtualization now becoming first rate satisfactory to aid database and mail server workloads, there could subsist a resurgence of greater province sales. And the Nehalem-EX processors point to fill that want for Linux, home windows, and presumably Solaris-on-x64 workloads. HP-UX has now not been ported to x64 processors, and HP has stated again and again that it is not attracted to doing so since it already gave its HP-UX, OpenVMS, and NonStop shoppers the compelled march to Itanium. despite the unaggressive roadmap for the Itanium chips, Integrity consumers will doubtless subsist gay with what HP is doing within the Itanium front.

    within the wake of the Superdome 2 and Integrity blade server announcement in April, HP reduce the charge on HP-UX 11iv3 for the Itanium 9300-primarily based methods, charging in response to the processor socket as a substitute of the core and at a fee that chops application prices in half. Intel is charging truly the equal fee for Xeon 7500 chips because it does for Itanium 9300s, and with so many common ingredients within the servers, HP says it may chop the pervade of a Superdome gear by route of round 40 p.c. This may well subsist adequate to maintain its consumers in opposition t an IBM and Oracle/Fujitsu onslaught. we'll see.

    HP's Integrity backdrop position, petite question, is an identical that IBM has used for greater than a decade: in case you carryout not need a proprietary gadget (like IBM's mainframes and AS/400s), then what about a power-based mostly province running AIX or Linux? And if that doesn't work, what about an x64 container working home windows or Linux? HP has the ProLiant card it may possibly play if it begins dropping an Integrity shop, and a fleshed out Xeon 7500 lineup of rack and blade servers are essential at this factor for valued clientele who want greater processing oomph, reminiscence ability, and that i/O bandwidth than a two-socket ProLiant container the consume of Intel's six-core Xeon 5600s or advanced Micro gadgets' Opteron 6100s can. Which is why HP's future Nehalem-EX beastie packing containers are strategically and tactically important. HP wants anything that smells just a petite devotion Integrity but is an x64 field.

    The DL580 and DL980 boxes are the first batch of Nehalem-EX beastie boxes that are coming out of HP, and they are rack-primarily based designs whose point is to seize falling Integrity customers in addition to give ProLiant retail outlets with burgeoning windows and Linux workloads a space to develop.

    The notice on the street is that the DL580 G7 server can subsist a 4-socket box in a 4U chassis that makes consume of Intel's 7500 sequence "Boxboro" chipset and supports sixty four reminiscence slots. So with sixteen GB DDR3 reminiscence sticks, this is 1 TB of reminiscence in a 4U field. the two-socket ProLiant DL360 G7 and DL380 G7 servers excellent out at a comparatively petite 192 GB in their 2U chassis. The DL580 offers 2.7 times the reminiscence for every socket of computing, and it must partly as a result of the change between a six-core (Xeon 5600) and an eight-core (Xeon 7500) processor and additionally because of the buffered reminiscence structure in the Nehalem-EX designs.

    The Nehalem-EX processors are available in a bunch of distinctive flavors, including Xeon 6500s that simplest travail in two-socket machines and which are designed predominantly for supercomputing purchasers who want lessen heat, loads of flops, and low fees and the Xeon 7500s, which approach in types two, 4, or eight socket containers that can hyperlink nodes together gluelessly. (that means, the usage of the Boxboro chipset and never a chipset/router to hyperlink assorted nodes into a separate device photograph). each the Xeon 6500 and 7500 processors are available in SKUs with 4, six, or eight cores activated on the chip. The DL580 G7 is not aimed at HPC stores in as an atrocious lot because it has four processor sockets, and it can subsist conviction of as the group of workers of the HP's x64 midrange server lineup.


    HP0-P21 HP-UX 11iv3 Advanced System Administration

    Study pilot Prepared by Killexams.com HP Dumps Experts


    Killexams.com HP0-P21 Dumps and true Questions

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    HP0-P21 exam Dumps Source : HP-UX 11iv3 Advanced System Administration

    Test Code : HP0-P21
    Test title : HP-UX 11iv3 Advanced System Administration
    Vendor title : HP
    exam questions : 124 true Questions

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    HP-UX 11iv3 Advanced System Administration

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    Comparing Unix versions: AIX, HP-UX and Solaris | killexams.com true questions and Pass4sure dumps

    In my eventual tip, I compiled a list of the top 50 Unix commands. Each of the commands I discussed are available on...

    the top three Unix variants: Solaris, AIX and HP-UX. In this article, I'll walk you through the history of these Unix flavors, discuss some their fundamental differences and close with a command table comparison of primary tasks.

    Sun SolarisSolaris, Sun's Unix version, was actually the successor of SunOS, going back to1992. SunOS was originally based on the BSD flavor of Unix, while SunOS versions 5.0 and later are based on Unix System V Release 4 (rebranded as Solaris).

    How did this happen? Let's trip further back in time. SunOS version 1.0 was introduced in 1983 with support for Sun-1 and Sun-2 systems. Version 2.0 was introduced in 1985 -- its claim to fame was virtual file system (VFS) and NFS. In 1987, AT&T and Sun announced that they would travail together on a project to merge System V and BSD into one release, based on SVR4. Solaris 2.4 was Sun's first Sparc/x86 release. The eventual release of SunOS was version 4.1.4 in November 1994. Solaris 7 was its first 64-bit Ultra Sparc release and added aboriginal support for file system metadata logging. Solaris 9, introduced in 2002, added support for Solaris Volume Manager and Linux capabilities. Solaris 10 was first introduced in 2005, which has a number of innovations, including support for its novel ZFS file system, Solaris Containers and logical Domains.

    Solaris is presently up to version 10; the latest update was released in October 2008. Among its innovations is support for paravirtualization, where Solaris 10 is used as a guest in Xen-based environments.

    Fundamental differences and unique characteristics. Solaris is free and open source, distributed through the OpenSolaris operating system. Solaris is a more command-line based Unix operating system than HP-UX or AIX. As a practical matter, it does not beget anything comparable to System Administration Manager (SAM) on HP-UX or System Management Interface instrument (SMIT) on AIX. Solaris runs on Sparc and x86 environments. It likewise has the newest file system around -- ZFS, which has made powerful strides in recent years, including the capacity to now consume it as its root file system. ZFS has the potential to subsist the best all-around Unix file system. Solaris has many ways to implement virtualization, including Containers/zones, xVM Server, logical Domains and hardware partitioning.

    Hewlett-Packard HP-UXHP-UX, Hewlett-Packard's Unix, was originally based on System V release 3. It initially ran exclusively on PA-RISC HP 9000 platform. Version 1 of HP-UX was released in 1984. Version 9, introduced its character-based graphical user interface (GUI), SAM, from which one administrates the system. Version 10, introduced in 1995, brought changes in the layout of the system file and directory structure, making it similar to AT&T SVR4. Version 11 was introduced in 1997 and was HP's first release to support 64-bit addressing. In 2000, it was rebranded to 11i, when HP introduced operating environments, bundled groups of layered applications for specific IT purposes. In 2001, Version 11.20 introduced support for Itanium systems. HP-UX was the first Unix that used Access Control Lists (ACLs) for file permissions and was likewise one of the first to introduce built-in support for logical Volume Manager. Today, HP-UX uses Veritas as its primary file system due to the close partnership between Veritas and HP. HP-UX is currently up to release 11iv3, update 4.

    Fundamental differences and unique characteristics. HP-UX is the first of the Unix systems to allow its customers to purchase specific operating environments. For example, if you are looking for its tall availability (HA) product Serviceguard, you would purchase the specific product that bundles in HA. HP-UX is the only version that uses a third-party file system -- Veritas (Sun used to present this many years ago). HP has many forms of virtualization, including nPartitions, vPars, Integrity Virtual Machines (IVMs) and resource partitions. This does beget a inclination to muddle some folks because there are so many choices. HP-UX runs on both HP 9000s and Integrity Itanium systems. HP-UX 11v3 can support up to 128 processor cores. HP-UX provides for a very tenacious command line in addition to its menu bases system, SAM. Performance tuning using kctune is in many ways simpler to what AIX and Solaris offer.

    IBM AIXAIX was introduced by IBM in 1986. While it is based on Unix System V, it likewise has BSD roots and, more than any other flavor, is a hybrid of both. AIX is the first OS to introduce a journaled file system (JFS). It was likewise the first to beget an integrated logical Volume Manager (LVM). IBM first ported AIX to its RS/6000 platform in 1989. Version 5L was a breakthrough release introduced in 2001 that provided for Linux affinity and logical partitioning with the Power4 servers. In 2004, AIX introduced virtualization in AIX 5.3. Advanced Power Virtualization (APV) offered micro-partitioning, shared processor pools and Symmetric multi-threading. In 2007, IBM enhanced its virtualization product, coinciding with the release of AIX 6.1 and the Power6 architecture. It likewise rebranded APV to PowerVM. The AIX enhancements included a profile of workload partitioning called WPARs, which are similar to than Solaris zones/Containers but with better functionality. The latest release is AIX 6.1.

    Fundamental differences and unique characteristics. IBM is widely recognized as having the best virtualization product on the midrange, PowerVM. Some recent innovations involve live application mobility (allowing one to fail over working partitions without taking downtime), energetic reminiscence Sharing and multiple shared processor pools. No other flavor of Unix can vaunt these virtualization characteristics, nor can they match IBM's 40-year history of virtualization -- PowerVM has evolved from mainframe/System z virtualization.

    AIX runs only on IBM Power Systems -- easily the most powerful of midrange Unix servers. IBM sells the fact that AIX runs exclusively on Power as a plus because it is fully optimized on this architecture and it has a clear road map around which the company adheres to religiously. It should likewise subsist preeminent that one can shun both Linux and AIX partitions on this platform. Its LX86 virtualization add-on allows one to shun x86 Linux applications that are not ported to the Power architecture. AIX has always had an integrated logical volume manager, unlike other flavors that require add-on products. AIX is the only Unix that has continued to grow market share in recent years, partly because of the capabilities of its Power hardware that continues to lead the province in reliably, availability and scalability.

    Command reference comparison 

    What are you trying to do? Solaris AIX HP-UX Specify order of title server resolution /etc/nsswitch.conf /etc/netsvc.conf etc/nsswitch.conf Configure networking /etc/nodename, /etc/netmasks, etc/defaultrouter, ifconfig recommendation is to consume SMIT, because ifconfig does not rescue changes, lsattr set_parms - initial, netconf file, ioscan Understand available file systems ufs, zfs jfs, jfs2 hfs, VxFS Add space to file systems growfs chfs extendfs Look at character-based admin GUI None. Admintool was retired years ago. SMC (similar to AIX's WebSM) is the GUI SMIT, smitty, WebSM SAM Examine hardware changes prtconf lscfg, lsattr, prtconf ioscan, dmesg View swap space swap lsps swapinfo Examine file system info /etc/vfstab /etc/file systems /etc/fstab Share NFS share exportfs exportfs Check software and/or filesets pkginfo, pkgchk lslpp, lssrc swlist Install software pkgadd smit install swinstall Check oversight logs prtdiag errpt dmesg Tune the kernel prtctl and /etc/system vmo, ioo, no, schedo, nfso, chdev kctune start/stop services Svcadm, svcs lssrc, stopsrc, startsrc Usually initiated by scripts from init.d I.E. for network -- /etc/init.d/net start Install devices drvconfig cfgmgr insf

    ABOUT THE AUTHOR: Ken Milberg is a systems consultant with two decades of sustain working with Unix and Linux systems. He is a SearchEnterpriseLinux.com anticipate the Experts advisor and columnist.

    What did you believe of this feature? Write to SearchDataCenter.com's Matt Stansberry about your data center concerns at  mstansberry@techtarget.com.  


    Author interview: UNIX and Linux System Administration Handbook | killexams.com true questions and Pass4sure dumps

    LWN.net needs you!

    Without subscribers, LWN would simply not exist. please account signing up for a subscription and helping to keep LWN publishing

    By Jonathan CorbetJuly 12, 2010

    One of the best references for Linux and UNIX system administrators over the years has been the "Handbooks" (either Linux Administration Handbook (LAH) or UNIX System Administration Handbook (USAH) at various points). But the eventual edition was published in 2000 (as USAH), and included information on then-current Red Hat Linux 6.2 and FreeBSD 3.4. A new, updated version, UNIX and Linux System Administration Handbook, Fourth Edition (ULSAH), is due out any day now, and the principal authors, Evi Nemeth, Garth Snyder, Trent R. Hein, and Ben Whaley, agreed to answer some questions for LWN readers. Below are their answers on the book, the repercussion of Linux, the future for UNIX and Linux, and more.

    LWN: Could you everybitof please introduce yourselves? What are you working on when you're not writing system administration books?

    Ben: I wear a bunch of different hats as an engineer at AppliedTrust in Boulder. In addition to consulting on architecture and operations in UNIX and Linux environments, I believe a lot about next generation technologies. Virtualization (in its myriad forms), application security, and the adoption of open source are everybitof of interest. I likewise beget a interest in the history of computing generally, and of UNIX and Linux in particular. Outside of computing, I baskin the republic of Boulder as much as possible.

    Garth: I was one of the original authors of the UNIX reserve lo these many years ago, but I've spent time on a variety of projects since then. Over time, I've actually done more software progress than administration.

    Evi: I'm Evi Nemeth, former Computer Science faculty at the University of Colorado. I'm now out of the UNIX/Linux/CS world altogether; I retired, bought a sailboat, took off and am currently in French Polynesia, half route across the Pacific en route to novel Zealand. I'm working on making my boat single-hander-friendly for when I shun out of crew. I carryout beget email on the boat via my ham radio; it's devotion uucp at about 100 characters per minute.

    Trent: I'm a scientist at heart, and I cherish understanding everybitof the layers of a system. When I'm not writing, I'm abysmal in the trenches working on IT infrastructure issues that orbit from low-level technical issues to policy and management.

    [ULSAH reserve
 cover] LWN: The novel version of the Linux Administration Handbook is on its way. When can they anticipate it, and what are you most excited about in this edition?

    Ben: They anticipate a mid to late July shelf date. There is loads of novel material in this combined UNIX and Linux edition, including novel chapters on virtualization, scripting, and green IT practices. I'm very pleased with the novel set of cartoons and cover art. Also, I'm thrilled to subsist included as a novel author after contributing to the 2nd edition of the Linux book.

    Garth: Many of the existing chapters beget had near-complete rewrites as well. You might believe that long-standing, basic technologies devotion disk storage and email would subsist relatively stable, but that's not factual at all. The route that most sites manage these resources has changed completely just in the eventual five years or so.

    Evi: LAH and USAH beget merged back together. It's due out sometime soon (July 2010). I'm most excited that it's finally done; I left the boat in Panama and came back to Colorado for a year to travail plenary time on the reserve — it's a huge amount of work.

    Trent: It better subsist in bookstores in the next 2 weeks!! I'm super excited about the novel Green IT section — it presents opportunities for sysadmins to create a huge contrast to their planet.

    LWN: What led to the determination to combine the UNIX and Linux versions of the book?

    Ben: Linux is recognized as an enterprise-grade operating system that has proven its capabilities throughout the explosion of computing in the eventual twenty years. It has significant momentum behind it, much more so than other leading UNIX variants. One could argue that UNIX lives on but looks to Linux as its leader. It has enough in common with traditional UNIX that it create sense to cover it everybitof in one place.

    Garth: One factor that's helped create it practicable to reintegrate is the stagy shakeout in the UNIX market. There simply aren't as many major versions of Unix around as there were ten years ago. We've seen a similar consolidation in the Linux arena as well, with most activity consolidating around a few major distributions.

    Evi: Personally, I'm not sure they should ever beget separated UNIX and Linux into 2 books. They thought that conditional text (if Linux, blah, blah, else ...) would create it smooth to manage both books with minimal effort. Not true. They likewise feel that this is probably the eventual edition that will subsist on paper and maybe the eventual edition period, so if they are doing one eventual book, let's cover everybitof the systems they can. I'm sorry they didn't manage to involve MacOS too.

    Trent: Combining the books makes sense because system administrators manage both UNIX and Linux systems ... organizations shouldn't subsist separating duties for these platforms since they're so similar.

    LWN: A lot of old-time Unix folks were taken by flabbergast when Linux hit the scene. You've seen a lot of Unix variants approach and go; what, carryout you think, accounts for the route that Linux has been able to displace Unix in so many settings?

    Evi: I believe the fact that Linux ran on PCs instead of the special vendor specific hardware of most UNIX systems gave Linux a leg up. University students ran Linux on their PCs, graduated, and went to travail in corporate America (Europe, etc.). Linux likewise embraced (or tolerated) Windows more than the UNIX vendors and found ways for the systems to co-exist peacefully.

    Trent: The community. It's a lot easier to support Linux these days because if there's any issue, there are hundreds or thousands of people to rotate to on the 'net for help. It's a lot easier than sitting on hold with a vendor's convene center for hours.

    LWN: What carryout you believe is the future of "true" Unix?

    Ben: In the near term I believe that UNIX environments will continue as they have, serving as venerable, tenured systems with proven stability and some powerful capabilities. Most of the UNIX systems I travail with shun heavy databases or specific enterprise applications. OpenSolaris is an impressive system with advanced features that don't exist elsewhere. In the longer term, it seems to me that Linux will displace UNIX. everybitof the major vendors contribute to Linux's progress (as LWN's own data suggests) and even promote standardization.

    Garth: Traditional Unix vendors don't beget the resources to compete against Linux on every front, so they've had to pick their battles and concentrate on distinguishing themselves through enterprise features such as database or filesystem performance. However, the number of domains in which it's practicable to demonstrate a proprietary odds over Linux is continuously shrinking. I don't remark any understanding for the current trends to change, so I'm pessimistic about the future of traditional Unix.

    Evi: UNIXes that shun on PC hardware will survive in niches — FreeBSD in embedded systems, OpenBSD in security conscious spots, Open Solaris if Oracle leaves it alone, etc., but systems on proprietary hardware (AIX, HP-UX, Solaris) will continue to decline in market share. Note that each of these three vendors is hedging their bets with a Linux product or with a Linux that runs on their hardware.

    Trent: There's such a large installed groundwork that I believe Unix is going to subsist around for a very long, long time. But, I can disclose you that almost everybitof the novel infrastructure I build is on Linux.

    LWN: Is the success of Linux a excellent thing? Or would they subsist better off now if some version of Unix had established itself more strongly in the open-source era?

    Ben: I was introduced to Linux before UNIX, and I suspect that I wouldn't subsist on the same path that I'm on today without it. In fact, I grew up from adolescence using Linux and today I contemplate at closed systems as a broken, legacy model of development. I cherish the creativity and community that open systems offer. To me it's a powerful thing that has kept UNIX alive.

    Garth: In some ways, this is devotion asking, "The surge of humanity: excellent or bad?" Linux has warts, but so carryout the alternatives. It's not the solution so much as the context in which other things happen.

    Outside of a thousand minor differences, there really isn't a dime's worth of contrast between the various Unix-like operating systems. They are everybitof basically the same. (Well, except perhaps for AIX. Whatever else one might assure about it, it's definitely not the same.) Fundamental, game-changing advances — such as Solaris's ZFS filesystem — are few and far between.

    Evi: Yes, the success of Linux is a very excellent thing. Each open source "Unix" has strengths. Linux is quick to remark a wintry conviction in another system, re-engineer it, and voila, it's fraction of Linux too.

    Trent: Linux is great!! In a way, Linux is really UNIX for the people. They needed that. It's forced the entire industry to subsist more open, which I'm not sure a more established open-source UNIX would beget achieved because it's inspired a shift in mindset.

    LWN: If you could command the Linux progress community to carryout one thing that would create life easier for system administrators, what would it be?

    Ben: Settle on a few more standards, such as log formats, command line arguments, configuration file syntax, and extensibility. As always, the more documentation, the better. energetic communities where developers and users interact are extremely valuable.

    Garth: Unix and Linux developers beget traditionally designed software to subsist as elastic and configurable as possible. A excellent sample of this approach is the original sendmail, which knew practically nothing about email addressing or transport until you manually programmed that erudition into its configuration file. Many common systems still Take that common approach: here's the instrument kit, build whatever you like. beget fun!

    This approach has its advantages, but it likewise imposes a cognitive affliction on everyone downstream of the developers. I'd devotion to remark more focus on simplicity and predictability in Linux distributions and less concern about hypothetical scenarios and edge cases. A Linux server may subsist a lot more complicated than an iPhone, but it surely doesn't need to subsist 1000 times more complicated, as it currently is.

    Unfortunately, it's especially difficult to promote simplicity and clarity in the open source world. It's smooth to accept patches that add incremental features but difficult to remove anything or crash compatibility. Reaching design consensus on future developments is difficult enough without revisiting the messes of the past.

    Evi: Standardize! create command names, arguments, and behavior the same. rep rid of the not-invented-here attitude.

    Trent: keep it simple. The early success of both UNIX and Linux can subsist attributed to their simple, modular approach. Too often these days folks are developing packages that are devotion a giant corn maze (but I won't title any names!). We'll everybitof rep farther if the progress community is focused on simplicity and modularity.

    LWN: The world is now plenary of Linux users and administrators who beget never touched a traditional Unix machine. What lesson from Unix carryout these folks risk missing in a Linux-only world?

    Garth: The Linux community has do a lot of exertion into strip-mining the UNIX systems of the past and digging out the nuggets of value that weren't nailed down. So no, I don't believe administrators unfamiliar with traditional UNIX systems are missing too much. On the other hand, they carryout appear to subsist stuck in about 1990 with respect to their basic conviction of what an operating system should be. contemplate at everybitof the incredible developments we've seen over the eventual 20 years in application and web development; software is completely different now. I hope the triumph of UNIX and Linux don't lock us into the POSIX API indefinitely.

    Evi: This generation of Linuxites beget used UNIX, Linux is a UNIX system. It has commands that you nature to a shell instead of driving thru a zillion menus, it has everybitof the primary concepts of UNIX, devotion pipes and input output redirection, it has man pages, ...

    Trent: Process adherence. In the UNIX world of yesterday, they had giant machines that filled an entire room, and dozens or hundreds of users shared them. In order to achieve a reasonable service level, system administrators had to subsist very process-focused, else they would repercussion many users if a mistake occurred. Today, a separate user may beget dozens of systems, physical and virtual. System administrators still need to beget a well-developed, well-followed set of processes to maintain them to provide an even higher flush of service.

    LWN: The world is likewise plenary of energetic novel developers for whom open source has always just been fraction of the environment. These developers will subsist creating their next generation of systems. What benevolent of operating systems carryout you hope they will build, and what recommendation would you present them on their way?

    Ben: The cloud is clearly the direction that is currently leading the pack, and I'm anxious to remark what happens next in the space. I hope that open source progress continues to thrive. It will likewise subsist engaging to remark what happens with security. People are paying a lot of attention to it these days, and we're well positioned to fix the less secure, trust-based models of earlier systems.

    Evi: A fundamental principle of UNIX-ish operating systems is that they provide commands that carryout one thing well and then the plumbing to hook them together to rep a final result. Windows-ish operating systems try to believe of everything a user might want to carryout and create a command or option for it. If the Windows developer didn't believe of the thing you need to do, you are out of luck. Next generation operating systems need the UNIXy approach. keep things simple, Take petite steps, but carryout it well.

    Trent: I hope they build operating systems that execute well. Back in the day, they had to optimize for every eventual cycle, because cycles were few. Some novel OS developers beget had the frill of hardware being absorbed from them, and it's smooth to forget what really happens at that layer. It's smooth to Fall into a pattern of slapping layer upon layer, resulting in a lot of kernel and application bloat. keep it simple, and believe about how to optimize for performance.

    LWN: Anything else you would devotion to assure to LWN's readers?

    Ben: I'm a lurker on LWN and I've learned a lot from both the articles and the comments. I esteem the energetic open source community on the site. Thanks for reading.

    Garth: I'm excited about Btrfs and really looking forward to its debut as a production system. Check it out!

    Evi: I need crew. Is there anyone out there (between jobs maybe) who isn't busy between September and November 2010? They share expenses on consumables; I pay for boat maintenance.

    Trent: I hope in UNIX and Linux System Administration Handbook (4th Edition) they instruct folks how to subsist excellent system administrators and find answers on their own, rather than providing every practicable answer for them. System administrators need erudition acquisition and problem solving skills more than anything.

    We would devotion to thank Evi, Garth, Trent, and Ben for taking the time to answer their questions.

    (Log in to post comments)

    Improving the Backup sustain By Making brilliant Software Choices | killexams.com true questions and Pass4sure dumps

    From the author of 

    Many commercial Unix vendors beget enhanced backup tools with decent oversight recovery built in. AIX has the aptly named backup and restore, while HP-UX has fbackup and frecover. Those, too, unfortunately, want precipitate and user-friendliness, although, in the case of these vendors, menu-driven backup tools are provided through system administration menus.

    To address this problem, many commercial vendors beget entered partnerships with third-party tools to subsist delivered as fraction of their OS. Sometimes these tools are ordeal versions that require plenary licensing for continued use. Freeware tools are likewise available, particularly in the case of Linux. In fact, for the administrators running Linux, the province of election is increasing at an incredible pace. keep in mind, however, that many GNU tools will compile and shun just fine on commercial Unixes.

    What are the options and how carryout you elect what to use? Why pay for a package when others are available for the cost of a download?

    I'll disclose you a secret. Some pretty slick commercial packages are likewise available free of charge, provided that you consume them in non-profit, non-commercial environments. For example, Enhanced Software Technologies makes BRU (stands for "Backup and Restore Utility), an incredibly easy-to-use, yet powerful and reliable backup utility. The contrast is that the personal (or free) edition will not back up remotely mounted drives or Samba shares, or allow the consume of remote tape drives. If you are running a separate server at home, this is still a pretty excellent deal. Another contender for slick and powerful, Arkeia from Knox Software, will let you back up two Windows 9x clients. Another free backup utility that provides powerful commercial features devotion indexes stored at the nascence of the tape and graphical search tools is taper, which is designed specifically for Linux.

    Free tools present the hard-to-beat argument of low charge while still providing reliability. Commercial tools generally provide maturity and smooth to consume interfaces. Multiplatform support is another issue. If you need to travail with a variety of operating systems and you want to maintain a common backup strategy and set of tools across your enterprise, you will likely beget to expend the money. For instance, imagine a network of several Windows workstations, a Solaris Web server, an AIX machine, a DGUX server, a yoke of NT boxes, and a Novell server. This benevolent of mixed environment is not unusual, so many commercial vendors will Take this into account. For instance, Legato provides software that works in precisely this benevolent of environment with a central server that backs up remote clients across the network. So does Arkeia, mentioned earlier. Furthermore, some of these advanced tools enforce excellent tape rotation practices with strict, built-in rule sets.

    Even in this complex environment, it's not so reduce and dry. Enter AMANDA, the "Advanced Maryland Automated Network Disk Archiver," a freeware instrument developed at the University of Maryland. With AMANDA, you set up a central server with a high-capacity tape drive to back up multiple network connected hosts. With Samba, AMANDA can likewise back up Windows 9x workstations. This is a powerful, multiplatform, network backup solution that costs nothing other than the time to download, compile, and learn.

    Some of these network packages consume multiple network streams so that several machines back up at the same time. Sure, it sounds great, but there are costs. In the case of a commercial package, there are the obvious software costs of per-client licensing, but that's only one consideration. What about the drain on your network? If you back up during the day or consume multiple network streams to carryout the backup, you may find network applications to subsist quite slow. Does your network backup solution suddenly require that you invest in a fibre network to Take up the slack? What about data recovery, the very understanding for backups in the first place? When the inevitable happens and you must regain from a crash, you will likely need to rebuild a working, networked system before you can even account getting at your data. Many large-scale network backup solutions are better at providing access to individual files than completely restoring a crashed server. You may still need to carryout regular OS backups and maintain snapshot configurations of your system so that you can re-create filesystems, devices, network addressing, and so on.



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