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HP0-P25 HP-UX 11iv3 Advanced System Administration

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HP0-P25 exam Dumps Source : HP-UX 11iv3 Advanced System Administration

Test Code : HP0-P25
Test appellation : HP-UX 11iv3 Advanced System Administration
Vendor appellation : HP
exam questions : 66 existent Questions

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HP HP-UX 11iv3 Advanced System

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

In my remaining tip, I compiled an inventory of the top 50 Unix instructions. every of the instructions I mentioned are available on...

the birthright three Unix editions: Solaris, AIX and HP-UX. listed here, i'll walk you in the course of the history of these Unix flavors, talk about some their basic differences and close with a command table assessment of captious initiatives.

solar SolarisSolaris, sun's Unix version, changed into definitely the successor of SunOS, going again to1992. SunOS turned into firstly according to the BSD flavor of Unix, while SunOS models 5.0 and later are in line with Unix device V free up four (rebranded as Solaris).

How did this whirl up? Let's depart further lower back in time. SunOS version 1.0 became delivered in 1983 with assist for solar-1 and sun-2 methods. edition 2.0 was introduced in 1985 -- its pretense to reputation become virtual file gadget (VFS) and NFS. In 1987, AT&T and solar introduced that they would work collectively on a project to merge system V and BSD into one release, according to SVR4. Solaris 2.four turned into sun's first Sparc/x86 liberate. The ultimate free up of SunOS become version four.1.4 in November 1994. Solaris 7 became its first 64-bit ultra Sparc free up and brought native pilot for file gadget metadata logging. Solaris 9, introduced in 2002, introduced pilot for Solaris volume supervisor and Linux capabilities. Solaris 10 was first introduced in 2005, which has a couple of innovations, including aid for its fresh ZFS file equipment, Solaris Containers and analytic Domains.

Solaris is at the instant as much as edition 10; the latest update was released in October 2008. amongst its improvements is aid for paravirtualization, where Solaris 10 is used as a visitor in Xen-based environments.

simple adjustments and wonderful features. Solaris is free and open source, dispensed through the OpenSolaris working system. Solaris is a greater command-line primarily based Unix operating gadget than HP-UX or AIX. As a realistic count number, it does not gain anything else similar to gadget Administration supervisor (SAM) on HP-UX or device management Interface instrument (SMIT) on AIX. Solaris runs on Sparc and x86 environments. It moreover has the latest file equipment around -- ZFS, which has made improbable strides in fresh years, including the skill to now consume it as its root file gadget. ZFS has the potential to live the top-rated all-around Unix file gadget. Solaris has many the birthright pass to enforce virtualization, together with Containers/zones, xVM Server, analytic Domains and hardware partitioning.

Hewlett-Packard HP-UXHP-UX, Hewlett-Packard's Unix, changed into originally in keeping with system V liberate 3. It in the genesis ran solely on PA-RISC HP 9000 platform. version 1 of HP-UX became launched in 1984. edition 9, delivered its personality-based mostly graphical user interface (GUI), SAM, from which one administrates the device. version 10, delivered in 1995, introduced changes in the layout of the device file and directory structure, making it similar to AT&T SVR4. version 11 became introduced in 1997 and became HP's first release to champion sixty four-bit addressing. In 2000, it turned into rebranded to 11i, when HP delivered working environments, bundled corporations of layered applications for inevitable IT applications. In 2001, edition 11.20 delivered assist for Itanium systems. HP-UX changed into the first Unix that used entry control Lists (ACLs) for file permissions and became additionally one of the vital first to interject developed-in pilot for analytic extent manager. nowadays, HP-UX uses Veritas as its fundamental file system as a result of the close partnership between Veritas and HP. HP-UX is at the instant as much as release 11iv3, supplant four.

primary changes and unique characteristics. HP-UX is the primary of the Unix techniques to allow its shoppers to buy specific working environments. as an instance, if you are searching for its inordinate availability (HA) product Serviceguard, you would buy the specific product that bundles in HA. HP-UX is the only version that uses a 3rd-party file gadget -- Veritas (solar used to present this a long time in the past). HP has many types of virtualization, including nPartitions, vPars, Integrity digital Machines (IVMs) and useful resource partitions. This does gain a bent to throw some folks as a result of there are such a lot of decisions. HP-UX runs on both HP 9000s and Integrity Itanium programs. HP-UX 11v3 can aid up to 128 processor cores. HP-UX offers for a really tenacious command line apart from its menu bases gadget, SAM. performance tuning using kctune is in many methods less complicated to what AIX and Solaris present.

IBM AIXAIX changed into introduced by IBM in 1986. whereas it's based on Unix device V, it additionally has BSD roots and, more than some other taste, is a hybrid of each. AIX is the first OS to interject a journaled file equipment (JFS). It turned into additionally the first to gain an built-in analytic volume manager (LVM). IBM first ported AIX to its RS/6000 platform in 1989. edition 5L was a breakthrough liberate delivered in 2001 that offered for Linux affinity and analytic partitioning with the Power4 servers. In 2004, AIX introduced virtualization in AIX 5.three. advanced vitality Virtualization (APV) offered micro-partitioning, shared processor pools and Symmetric multi-threading. In 2007, IBM more advantageous its virtualization product, coinciding with the release of AIX 6.1 and the Power6 architecture. It additionally rebranded APV to PowerVM. The AIX enhancements included a type of workload partitioning known as WPARs, that are akin to than Solaris zones/Containers but with greater functionality. The latest unlock is AIX 6.1.

primary changes and enjoyable qualities. IBM is extensively recognized as having the premiere virtualization product on the midrange, PowerVM. Some contemporaneous improvements consist of live software mobility (permitting one to fail over working partitions without taking downtime), active reminiscence Sharing and diverse shared processor swimming pools. No other relish of Unix can vaunt these virtualization qualities, nor can they match IBM's 40-yr historical past of virtualization -- PowerVM has evolved from mainframe/gadget z virtualization.

AIX runs simplest on IBM vigour techniques -- without vicissitude the most powerful of midrange Unix servers. IBM sells the indisputable fact that AIX runs exclusively on vitality as a plus because it is fully optimized on this structure and it has a transparent street map around which the trade adheres to religiously. it's going to even live mentioned that you can actually hasten each Linux and AIX partitions on this platform. Its LX86 virtualization add-on enables one to hasten x86 Linux functions that don't seem to live ported to the power structure. AIX has always had an built-in analytic quantity supervisor, in contrast to different flavors that require add-on items. AIX is the simplest Unix that has persevered to grow market participate in contemporaneous years, partly as a result of the capabilities of its energy hardware that continues to lead the box in reliably, availability and scalability.

Command reference comparison 

What are you attempting to do? Solaris AIX HP-UX Specify order of appellation server decision /and many others/nsswitch.conf /and so on/netsvc.conf and so on/nsswitch.conf Configure networking /and many others/nodename, /and so forth/netmasks, and so on/defaultrouter, ifconfig suggestion is to execute consume of SMIT, as a result of ifconfig doesn't save adjustments, lsattr set_parms - initial, netconf file, ioscan take into account purchasable file systems ufs, zfs jfs, jfs2 hfs, VxFS Add house to file systems growfs chfs extendfs examine character-based admin GUI None. Admintool become retired years in the past. SMC (corresponding to AIX's WebSM) is the GUI SMIT, smitty, WebSM SAM determine hardware alterations prtconf lscfg, lsattr, prtconf ioscan, dmesg View swap spaceswap lsps swapinfo examine file gadget info /and so forth/vfstab /etc/file systems /etc/fstab Share NFS percentageexportfs exportfs determine utility and/or filesets pkginfo, pkgchk lslpp, lssrc swlist deploy utility pkgadd smit installation swinstall determine mistake logs prtdiag errpt dmesg Tune the kernel prtctl and /and so forth/system vmo, ioo, no, schedo, nfso, chdev kctune delivery/stop amenitiesSvcadm, svcs lssrc, stopsrc, startsrc always initiated by scripts from init.d I.E. for community -- /and so forth/init.d/net beginInstall instruments drvconfig cfgmgr insf

concerning the creator: Ken Milberg is a methods consultant with two decades of relish working with Unix and Linux programs. he's a SearchEnterpriseLinux.com examine the specialists marketing consultant and columnist.

What did you account of this feature? Write to SearchDataCenter.com's Matt Stansberry about your facts core considerations at  mstansberry@techtarget.com.  


Mixing windows and Linux: How accomplish You control option? | killexams.com existent Questions and Pass4sure dumps

Microsoft’s home windows working methods account for the biggest participate of server spending in the records middle, but windows is through no skill the simplest betray on the town: Linux’s market participate in selected is growing strongly. It’s starting to live because in crimson Hat commercial enterprise Linux (RHEL) and SUSE Linux trade Server (SLES) there are at least two distros which are seen as commercial enterprise ready and proper for the large time, and additionally since it’s low-cost, manageable, respectable for virtualization and it runs the application that many individuals are looking to use. there are many extra reasons as smartly.

What that capability is that there will likely live many greater “tremendously combined” facts headquarters environments (meaning environments working a major variety of servers the usage of each windows and Linux) in the future than there gain been during the past. windows-simplest facts facilities, or ones which most efficient hasten the unusual Linux server or two, will develop into increasingly rare.

but how accomplish you control mixed environments? operating diverse administration systems for each platform is inefficient and would compel many directors nuts. anyway, the gross factor of a management system is to enable the monitoring and controlling of every principal system in a company from a solitary console. no longer from two or three.

extra On blended Environments

Virtualization makes issues even more complicated: How accomplish you maneuver windows and Linux servers which may well live running on physical servers or as digital machines operating on Microsoft’s Hyper-V, VMware’s ESX, or the Xen hypervisor?

Competing administration decisions

when you are coming from a home windows ambiance and relocating towards a blended atmosphere by pass of implementing Linux, then you definately may moreover already live using Microsoft’s gadget headquarters management device. system middle’s Operations supervisor 2007 module now contains (in beta) a gallop Platform Extensions pack with pilot for:

  • HP-UX 11iv3 (PA-RISC and IA64)
  • sun Solaris 10 (SPARC and x86)
  • IBM AIX 5L V5.3, technology degree 6, SP5 (PowerPC) and, drastically,
  • crimson Hat commercial enterprise Linux 5 Server
  • Novell SUSE Linux enterprise Server 10 SP1
  • digital machines are managed from system middle the consume of the digital computer supervisor 2008 (VMM) module, which moreover supports virtual machines running on VMware’s ESX server as well as Hyper-V. And VMM additionally integrates with VMware’s VI3 application so that it can live used to carry out VI3 management operations. for example, it's viable, from within VMM, to initiate a VMotion operation which strikes a running VMware digital computer from one actual host to a further devoid of stopping the virtual laptop. (Microsoft at the instant has no akin to VMotion —its short Migration comprises stopping the virtual laptop for some seconds as it is moved to a fresh host.)

    by the consume of competitors Novell offers its Zenworks management system, which comprises laptop and cellular device administration in addition to administration services for the following server platforms:

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

    both of these administration programs permit the administration of windows and each SLES and RHEL, but Microsoft seems to prefer the previous over the latter. Demonstrating this, the company signed a collection of agreements with Novell in November 2006 to work towards better interoperability between home windows and SLES in 4 areas:

  • virtualization
  • techniques administration
  • listing integration and identification
  • workplace document codecs
  • The deal, which runs at the least except 2012, has been treated with an excellent deal of suspicion by means of many individuals, partly because it can conveniently live construed as a mode for Microsoft to glean a “pet” Linux distro which it will probably control and consume to glean an improved understanding of Linux and purchasers’ causes for desirous to consume it for its personal knowledge. The deal contains an condense for Microsoft to chorus from taking prison action towards Novell’s customers for the usage of Linux (which Microsoft claims infringes a lot of of its patents,) and moreover involves Microsoft making payments to Novell (and therefore in a roundabout pass subsidizing SLES.) one pass here's achieved is via buying aid coupons from Novell, which Microsoft then sells on to its purchasers at a reduction.

    probably the most notable results of the condense is that SLES 10 is now the most efficient Linux distro collectively supported via both organizations as a guest working system virtualized on Hyper-V, and windows Server 2008 is jointly supported when hasten as a paravirtualized guest on SLES the usage of the Xen hypervisor protected with the distro.

    “The interop settlement is alive and working …”

    regardless of the suspicion, many agencies view the interoperability condense as a positive step and are tickled to prefer talents of the merits it offers. “The interop agreement is alive and working, and the incontrovertible fact that it's an extended term condense is first rate news,” says Nick Leake, Director of Operations and Infrastructure at ITV, a UK-based commercial broadcasting enterprise which runs about 200 windows servers and 100 SLES servers.

    ITV has taken erudition of the agreement between Microsoft and Novell to purchase discounted assist coupons for SLES, however Leake says this did not gain an impact on his determination to save in compel SLES in the first region. “We made the altenative four years in the past, earlier than the Novell - Microsoft interop settlement,” he says. “We conducted an comparison manner before making the watchful resolution to depart with SUSE. They selected no longer to depart with red Hat as a result of they don’t gain the identical appointment degree with purchasers as SUSE, and when the Microsoft Novell deal got here alongside [it] easily proven that they had made the birthright resolution.”

    Leake moreover says that the means to manage SLES from within Microsoft’s device headquarters is terribly critical—although ITV opted to execute consume of Novell’s Zenworks to control each structures. He says assist for the operating methods in each other’s virtual environments is additionally a righteous suggestion.

    As Linux turns into increasingly authorized it’s doubtless that combined facts headquarters environments will become more and more commonplace. What’s more, the lines between diverse platforms will become greater blurred as virtualization—together with VMware’s vision of servers that will moreover live moved within an internal cloud and out to external cloud service suppliers - and more desirable interoperability execute it viable to deal with home windows and Linux servers—both actual and virtual—readily as computing resources which are provisioned and managed with the equal tools in the identical way.


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

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

    There are three months when server makers customarily launch products: March, June, and September. And it feels dote June is shaping as much as live a extremely sedulous month for the massive server gamers — exceptionally the king of the server hill, Hewlett-Packard.

    As El Reg up to now reported, HP grew to become up on the Nehalem-EX launch adventure in San Francisco this spring, showing off some machines without covers and labels, and it wouldn't articulate much about its plans for this eight-core beast of a processor. absolutely, HP didn't wish to overshadow the Integrity line of "Tukwila" Itanium 9300 blade machines it debuted at the conclusion of April, a month after Intel's Xeon 7500 become trotted out.

    (that you would live able to read about these blade bins here, glean the prefatory feeds and speeds there, and glean extra particulars on pricing of the high-end, sixteen-socket Superdome 2, which is never delivery except October, here. most likely, there are 32- and maybe even 64-socket types of the Superdome 2 machines, lashing collectively two or 4 of the Superdome 2 blade chassis collectively the usage of the sx3000 chipset's crossbar. after all, HP wants a huge bad Unix bailiwick to compete with IBM and Oracle/Fujitsu huge iron).

    in the carryweight time, the marketplace for machines with 4 or eight sockets in keeping with the x64 architecture is diminishing, but with server virtualization now fitting righteous enough to assist database and mail server workloads, there could live a resurgence of larger box earnings. And the Nehalem-EX processors end to fill that exigency for Linux, home windows, and most likely Solaris-on-x64 workloads. HP-UX has now not been ported to x64 processors, and HP has preeminent many times that it is not attracted to doing so because it already gave its HP-UX, OpenVMS, and NonStop valued clientele the forced march to Itanium. regardless of the unaggressive roadmap for the Itanium chips, Integrity customers will doubtless live satisfied with what HP is doing within the Itanium front.

    in the wake of the Superdome 2 and Integrity blade server announcement in April, HP crop the expense on HP-UX 11iv3 for the Itanium 9300-based mostly methods, charging in response to the processor socket in its location of the core and at a fee that chops utility prices in half. Intel is charging truly the identical fee for Xeon 7500 chips as it does for Itanium 9300s, and with so many indifferent constituents in the servers, HP says it will possibly chop the can impregnate of a Superdome device by pass of round 40 percent. This can live adequate to maintain its shoppers in opposition t an IBM and Oracle/Fujitsu onslaught. they are going to see.

    HP's Integrity backdrop place, no doubt, is a similar that IBM has used for more than a decade: in case you accomplish not covet a proprietary system (like IBM's mainframes and AS/400s), then what about an influence-based container working AIX or Linux? And if that would not work, what about an x64 container running windows or Linux? HP has the ProLiant card it will probably play if it begins losing an Integrity store, and a fleshed out Xeon 7500 lineup of rack and blade servers are crucial at this point for shoppers who exigency extra processing oomph, reminiscence potential, and that i/O bandwidth than a two-socket ProLiant box using Intel's six-core Xeon 5600s or superior Micro gadgets' Opteron 6100s can. Which is why HP's future Nehalem-EX beastie boxes are strategically and tactically crucial. HP wants anything that smells just a slight dote Integrity however is an x64 field.

    The DL580 and DL980 boxes are the first batch of Nehalem-EX beastie packing containers which are coming out of HP, and they're rack-based designs whose direct is to snare falling Integrity clients as well as supply ProLiant stores with burgeoning home windows and Linux workloads a spot to grow.

    The live watchful in the street is that the DL580 G7 server might live a four-socket bailiwick in a 4U chassis that uses Intel's 7500 sequence "Boxboro" chipset and helps sixty four remembrance slots. So with sixteen GB DDR3 remembrance sticks, that is 1 TB of reminiscence in a 4U container. both-socket ProLiant DL360 G7 and DL380 G7 servers accurate out at a comparatively little 192 GB in their 2U chassis. The DL580 presents 2.7 instances the remembrance for each socket of computing, and it must partly because of the unlikeness between a six-core (Xeon 5600) and an eight-core (Xeon 7500) processor and moreover as a result of the buffered reminiscence architecture in the Nehalem-EX designs.

    The Nehalem-EX processors arrive in a bunch of several flavors, together with Xeon 6500s that most efficient work in two-socket machines and that are designed predominantly for supercomputing purchasers who exigency lessen heat, loads of flops, and low expenses and the Xeon 7500s, which are available models two, four, or eight socket bins that can link nodes collectively gluelessly. (that means, using the Boxboro chipset and not a chipset/router to hyperlink varied nodes birthright into a solitary system picture). each the Xeon 6500 and 7500 processors are available SKUs with four, six, or eight cores activated on the chip. The DL580 G7 is not geared toward HPC retail outlets in as a noteworthy deal as it has four processor sockets, and it can moreover live notion of as the staff of the HP's x64 midrange server lineup.


    HP0-P25 HP-UX 11iv3 Advanced System Administration

    Study pilot Prepared by Killexams.com HP Dumps Experts


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    HP0-P25 exam Dumps Source : HP-UX 11iv3 Advanced System Administration

    Test Code : HP0-P25
    Test appellation : HP-UX 11iv3 Advanced System Administration
    Vendor appellation : HP
    exam questions : 66 existent 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 existent questions and Pass4sure dumps

    In my terminal 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, debate some their fundamental differences and close with a command table comparison of captious 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 depart further back in time. SunOS version 1.0 was introduced in 1983 with champion for Sun-1 and Sun-2 systems. Version 2.0 was introduced in 1985 -- its pretense to fame was virtual file system (VFS) and NFS. In 1987, AT&T and Sun announced that they would work 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 terminal release of SunOS was version 4.1.4 in November 1994. Solaris 7 was its first 64-bit Ultra Sparc release and added native champion for file system metadata logging. Solaris 9, introduced in 2002, added champion for Solaris Volume Manager and Linux capabilities. Solaris 10 was first introduced in 2005, which has a number of innovations, including champion for its fresh ZFS file system, Solaris Containers and analytic Domains.

    Solaris is presently up to version 10; the latest update was released in October 2008. Among its innovations is champion 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 gain 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 moreover has the newest file system around -- ZFS, which has made noteworthy strides in recent years, including the skill to now consume it as its root file system. ZFS has the potential to live the best all-around Unix file system. Solaris has many ways to implement virtualization, including Containers/zones, xVM Server, analytic 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 champion 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 champion for Itanium systems. HP-UX was the first Unix that used Access Control Lists (ACLs) for file permissions and was moreover one of the first to interject built-in champion for analytic 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 high 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 offer this many years ago). HP has many forms of virtualization, including nPartitions, vPars, Integrity Virtual Machines (IVMs) and resource partitions. This does gain a current to throw some folks because there are so many choices. HP-UX runs on both HP 9000s and Integrity Itanium systems. HP-UX 11v3 can champion 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 moreover has BSD roots and, more than any other flavor, is a hybrid of both. AIX is the first OS to interject a journaled file system (JFS). It was moreover the first to gain an integrated analytic 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 analytic 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 moreover rebranded APV to PowerVM. The AIX enhancements included a figure 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), active remembrance 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 lucid road map around which the company adheres to religiously. It should moreover live preeminent that one can hasten both Linux and AIX partitions on this platform. Its LX86 virtualization add-on allows one to hasten x86 Linux applications that are not ported to the Power architecture. AIX has always had an integrated analytic volume manager, unlike other flavors that require add-on products. AIX is the only Unix that has continued to grow market participate in recent years, partly because of the capabilities of its Power hardware that continues to lead the bailiwick in reliably, availability and scalability.

    Command reference comparison 

    What are you trying to do? Solaris AIX HP-UX Specify order of appellation 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 save 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 mistake 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 relish working with Unix and Linux systems. He is a SearchEnterpriseLinux.com examine the Experts advisor and columnist.

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


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

    This article brought to you by LWN subscribers

    Subscribers to LWN.net made this article — and everything that surrounds it — possible. If you cherish their content, gladden buy a subscription and execute the next set of articles possible.

    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 terminal 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 reply some questions for LWN readers. Below are their answers on the book, the impact of Linux, the future for UNIX and Linux, and more.

    LWN: Could you sum gladden interject 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 cogitate a lot about next generation technologies. Virtualization (in its myriad forms), application security, and the adoption of open source are sum of interest. I moreover gain a interest in the history of computing generally, and of UNIX and Linux in particular. Outside of computing, I luxuriatein 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 evolution 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 pass across the Pacific en route to fresh Zealand. I'm working on making my boat single-hander-friendly for when I hasten out of crew. I accomplish gain email on the boat via my ham radio; it's dote uucp at about 100 characters per minute.

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

    [ULSAH reserve
 cover] LWN: The fresh version of the Linux Administration Handbook is on its way. When can they hope 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 fresh material in this combined UNIX and Linux edition, including fresh chapters on virtualization, scripting, and green IT practices. I'm very pleased with the fresh set of cartoons and cover art. Also, I'm thrilled to live included as a fresh author after contributing to the 2nd edition of the Linux book.

    Garth: Many of the existing chapters gain had near-complete rewrites as well. You might cogitate that long-standing, basic technologies dote disk storage and email would live relatively stable, but that's not valid at all. The pass that most sites manage these resources has changed completely just in the terminal five years or so.

    Evi: LAH and USAH gain 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 work plenary time on the reserve — it's a huge amount of work.

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

    LWN: What led to the decision 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 terminal twenty years. It has significant momentum behind it, much more so than other leading UNIX variants. One could squabble that UNIX lives on but looks to Linux as its leader. It has enough in common with traditional UNIX that it execute sense to cover it sum in one place.

    Garth: One factor that's helped execute it feasible 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 certain they should ever gain separated UNIX and Linux into 2 books. They thought that conditional text (if Linux, blah, blah, else ...) would execute it facile to manage both books with minimal effort. Not true. They moreover feel that this is probably the terminal edition that will live on paper and maybe the terminal edition period, so if they are doing one terminal book, let's cover sum 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 live separating duties for these platforms since they're so similar.

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

    Evi: I cogitate 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 work in corporate America (Europe, etc.). Linux moreover embraced (or tolerated) Windows more than the UNIX vendors and create ways for the systems to co-exist peacefully.

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

    LWN: What accomplish you cogitate 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 work with hasten ponderous 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. sum the major vendors contribute to Linux's evolution (as LWN's own data suggests) and even promote standardization.

    Garth: Traditional Unix vendors don't gain 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 feasible to demonstrate a proprietary odds over Linux is continuously shrinking. I don't perceive any intuition for the current trends to change, so I'm pessimistic about the future of traditional Unix.

    Evi: UNIXes that hasten 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 ground that I cogitate Unix is going to live around for a very long, long time. But, I can uncover you that almost sum the fresh infrastructure I build is on Linux.

    LWN: Is the success of Linux a righteous thing? Or would they live 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 live on the selfsame path that I'm on today without it. In fact, I grew up from adolescence using Linux and today I searchfor 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 noteworthy thing that has kept UNIX alive.

    Garth: In some ways, this is dote asking, "The tower of humanity: righteous or bad?" Linux has warts, but so accomplish 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 unlikeness between the various Unix-like operating systems. They are sum basically the same. (Well, except perhaps for AIX. Whatever else one might articulate 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 righteous thing. Each open source "Unix" has strengths. Linux is quick to perceive a icy view in another system, re-engineer it, and voila, it's portion 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 live more open, which I'm not certain a more established open-source UNIX would gain achieved because it's inspired a shift in mindset.

    LWN: If you could command the Linux evolution community to accomplish one thing that would execute 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. active communities where developers and users interact are extremely valuable.

    Garth: Unix and Linux developers gain traditionally designed software to live as springy and configurable as possible. A righteous instance 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 soundless prefer that universal approach: here's the instrument kit, build whatever you like. gain fun!

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

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

    Evi: Standardize! execute command names, arguments, and conduct the same. glean rid of the not-invented-here attitude.

    Trent: reserve it simple. The early success of both UNIX and Linux can live attributed to their simple, modular approach. Too often these days folks are developing packages that are dote a giant corn maze (but I won't appellation any names!). We'll sum glean farther if the evolution community is focused on simplicity and modularity.

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

    Garth: The Linux community has save a lot of trouble 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 cogitate administrators unfamiliar with traditional UNIX systems are missing too much. On the other hand, they accomplish seem to live stuck in about 1990 with respect to their basic view of what an operating system should be. searchfor at sum the incredible developments we've seen over the terminal 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 gain used UNIX, Linux is a UNIX system. It has commands that you type to a shell instead of driving thru a zillion menus, it has sum the captious concepts of UNIX, dote 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 live very process-focused, else they would impact many users if a mistake occurred. Today, a solitary user may gain dozens of systems, physical and virtual. System administrators soundless exigency to gain a well-developed, well-followed set of processes to maintain them to provide an even higher flush of service.

    LWN: The world is moreover plenary of energetic fresh developers for whom open source has always just been portion of the environment. These developers will live creating their next generation of systems. What kind of operating systems accomplish you hope they will build, and what recommendation would you offer them on their way?

    Ben: The cloud is clearly the direction that is currently leading the pack, and I'm anxious to perceive what happens next in the space. I hope that open source evolution continues to thrive. It will moreover live consuming to perceive 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 accomplish one thing well and then the plumbing to hook them together to glean a final result. Windows-ish operating systems try to cogitate of everything a user might want to accomplish and execute a command or option for it. If the Windows developer didn't cogitate of the thing you exigency to do, you are out of luck. Next generation operating systems exigency the UNIXy approach. reserve things simple, prefer little steps, but accomplish it well.

    Trent: I hope they build operating systems that fulfill well. Back in the day, they had to optimize for every terminal cycle, because cycles were few. Some fresh OS developers gain had the extravagance of hardware being distraught from them, and it's facile to forget what really happens at that layer. It's facile to descend into a pattern of slapping layer upon layer, resulting in a lot of kernel and application bloat. reserve it simple, and cogitate about how to optimize for performance.

    LWN: Anything else you would dote to articulate to LWN's readers?

    Ben: I'm a lurker on LWN and I've scholarly a lot from both the articles and the comments. I cherish the active 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 exigency crew. Is there anyone out there (between jobs maybe) who isn't sedulous between September and November 2010? They participate 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 live righteous system administrators and find answers on their own, rather than providing every feasible reply for them. System administrators exigency erudition acquisition and problem solving skills more than anything.

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

    (Log in to post comments)

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

    From the author of 

    Many commercial Unix vendors gain enhanced backup tools with decent mistake recovery built in. AIX has the aptly named backup and restore, while HP-UX has fbackup and frecover. Those, too, unfortunately, want speed 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 gain entered partnerships with third-party tools to live delivered as portion of their OS. Sometimes these tools are affliction versions that require plenary licensing for continued use. Freeware tools are moreover available, particularly in the case of Linux. In fact, for the administrators running Linux, the bailiwick of altenative is increasing at an incredible pace. reserve in mind, however, that many GNU tools will compile and hasten just fine on commercial Unixes.

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

    I'll uncover you a secret. Some pretty slick commercial packages are moreover 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 dependable backup utility. The unlikeness 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 solitary server at home, this is soundless a pretty righteous 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 noteworthy commercial features dote indexes stored at the genesis of the tape and graphical search tools is taper, which is designed specifically for Linux.

    Free tools offer the hard-to-beat controversy of low charge while soundless providing reliability. Commercial tools generally provide maturity and facile to consume interfaces. Multiplatform champion is another issue. If you exigency to work 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 gain to expend the money. For instance, imagine a network of several Windows workstations, a Solaris Web server, an AIX machine, a DGUX server, a couple of NT boxes, and a Novell server. This kind of mixed environment is not unusual, so many commercial vendors will prefer this into account. For instance, Legato provides software that works in precisely this kind 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 righteous tape rotation practices with strict, built-in rule sets.

    Even in this complicated environment, it's not so crop 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 moreover 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 selfsame 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 accomplish the backup, you may find network applications to live quite slow. Does your network backup solution suddenly require that you invest in a fibre network to prefer up the slack? What about data recovery, the very intuition for backups in the first place? When the inevitable happens and you must recoup from a crash, you will likely exigency 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 soundless exigency to accomplish 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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