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if you're silent the usage of Intel's Itanium processors, you'll more desirable come by your orders in soon. Intel has introduced that it's going to fulfill the ultimate shipment of Itanium 9700 processors on July 29, 2021. The enterprise says orders ought to live placed no later than January 30, 2020 (noticed with the aid of Anandtech).
The Itanium 9700 line of 4- and eight-core processors represents the final vestiges of Intel's attempt to switch the realm to an entirely unique processor architecture: IA-64. in its position of being a sixty four-bit extension to IA-32 ("Intel architecture-32," Intel's preferred appellation for x86-compatible designs), IA-64 turned into an entirely unique design developed round what Intel and HP known as "Explicitly Parallel usher Computing" (EPIC).
excessive efficiency processors of the late Nineties—each the RISC processors in the Unix world and Intel's IA-32 Pentium professionals—were becoming increasingly complex pieces of hardware. The usher units the processors used were very nearly serial, describing a string of operations to live performed one after the other. Executing directions in that accurate serial order limits efficiency (because each and every usher hold to wait up for its predecessor to live comprehensive), and it turns out isn't in reality integral.
There are often directions that accomplish not depend on each and every different, and that they may moreover live performed simultaneously. Processors fancy the Pentium pro and DEC Alpha analyzed the instructions they had been working and the dependencies between them, and people used this information to execute guidelines out of order. They extracted parallelism between unbiased guidance, breaking free from the strictly serial order that the program code implies. These processors additionally performed speculative execution; an instruction counting on the result of a different guideline can nevertheless live carried out if the processor could gain an excellent wager at what the outcome of the primary guideline is. If the pot is right, the speculative calculation is used; if the guess is incorrect, the processor undoes the hypothesis and retries the calculation with the proper cost.
The processor exigency to silent act "as if" or not it's operating guidance serially, one at a time, in the exact order that the software determines. appreciable processor materials are committed to handling this; first figuring out which guidelines can moreover live rush in parallel and out of order, and then putting issues lower back collectively once again when updating device reminiscence, to live certain the phantasm of serial execution is preserved . as an alternative of inserting every bit of this complexity within the processor, Intel's conception for IA-64 become to position it into the compiler. Let the compiler establish which guidelines can moreover live rush concurrently, and let it Tell the processor explicitly to rush those unbiased guidelines in parallel. With this strategy, the processor's transistors can live used for things fancy cache and useful devices—the first-technology IA-64 processors could rush six guidelines in parallel, and the present chips can rush a whopping 12 instructions in parallel—instead of the expend of those transistors for every bit of the apparatus to address the out-of-order, speculative execution.conception meets reality
This changed into a nice thought, and certainly for some workloads—mainly heavy-responsibility floating aspect number crunching—Itanium chips performed decently. however for ordinary integer workloads, Intel discovered a problem that compiler developers had been warning the enterprise about every bit of along: it's in fact very complicated to pattern out every bit of those dependencies and understand which issues can moreover live finished in parallel at collect time.
as an example, loading a price from reminiscence takes a various age of time. If the value is within the processor's cache, it may moreover live very brief, fewer than 10 cycles. if it is in main reminiscence, it may well retract a brace of hundred cycles to load. If or not it's been paged out to a hard disk, it could live billions of cycles earlier than the price is in reality attainable for the processor to use. An usher that depends upon that cost might as a result circle into able for execution within a handful of nanoseconds, or a thousand million of them. When the processor is dynamically settling on which guidance to rush and when, it will probably deal with this contour of adaptation. however with EPIC, the scheduling of instructions is fixed and static. The processor has no manner of carrying on with other drudgery while looking forward to a price to live fetched from memory, and it cannot without problems fetch values "early" so that they may live attainable when they are definitely vital.
This problem by myself turned into probably insurmountable, as a minimum for everyday-intention computing. but Itanium then faced challenges even in these fields the position it confirmed some strength. The initial Itanium hardware blanketed hardware-primarily based IA-32 compatibility, so it could rush current x86 application, however it was a all lot slower than contemporaneous x86 processors. For organizations wanting to transition their software from 32-bit to 64-bit, this wasn't very adequate. throughout the transition, the skill to rush combined workloads (some application 32-bit, some 64-bit) is advantageous. IA-sixty four failed to in fact tender this transitional route; it might rush 64-bit software at aboriginal pace but took a mammoth hit for 32-bit software, and the x86 chips that hold been respectable at 32-bit application could not rush IA-sixty four application at all.
Intel's competitor AMD additionally desired to construct sixty four-bit processors, but without the materials to arrive up with an all-new 64-bit structure, AMD did whatever thing diverse. Its AMD64 structure become developed as an extension to x86 that supported 64-bit computation. AMD didn't wish to basically alternate how processors and compilers worked; AMD64 processors endured to gain expend of the identical out-of-order execution and complex hardware as become present in high-efficiency IA-32 chips (and which continues to live basic to high-performance processors to today). because AMD64 and IA-32 were so similar, the selfsame hardware could live comfortably designed to address both, and there was no efficiency hit to running 32-bit software on the sixty four-bit chips, so transitional, blended workloads might rush unhindered.
This made AMD64 an disagreeable lot extra attractive to developers and businesses alike. Intel scrambled to create its personal extension to IA-32, but Microsoft—which already supported IA-32, IA-sixty four, and AMD64—told the enterprise that it wasn't inclined to aid a second 64-bit extension to x86, leaving Intel with Little alternative but to adopt AMD64 itself. It duly did so (albeit with some incompatibilities), under the identify Intel sixty four.IA-sixty four left with no region to move
This squeezed out Itanium from most markets. AMD64 provided the transitional direction from IA-32, so it received over the industry and every bit of of a sudden moved down into the buyer area, too. Itanium silent had a number of hints up its sleeve—Intel's most superior reliability, availability, and serviceability (RAS) elements made their debut with Itanium first, so if you needed a system that may retract staid problems fancy remembrance failures and processor screw ups in stride, Itanium changed into, for a time, the way to go. but for essentially the most part, these points are now purchasable in Xeon chips, putting off even that skills.
The proliferation of vector usher sets—AMD64 made SSE2 necessary, and Intel's AVX512 adds large unique capabilities—additionally skill that it live silent viable, in some ways, to explicitly educate the processor to perform operations in parallel, albeit in a manner it is plenty extra confined. rather than bundles of distinct guidance every bit of intended to live carried out simultaneously, the vector guideline sets function the selfsame usher to varied items of statistics simultaneously. here's no longer as loaded and flexible because the EPIC conception, however seems to live respectable satisfactory for a lot of of those identical number-crunching workloads that Itanium excelled at.
currently, the simplest supplier silent selling Itanium machines is HPE (the commercial enterprise enterprise that got here from HP's 2014 split) in its Integrity Superdome line, which runs the HP-UX working equipment. Superdome methods tender a specific stress on RAS, which once made Itanium a superb fit, however now they can live outfitted with Xeon chips. these, rather than Itanium, hold an extended-time age future. HPE will aid systems up to at the least 2025, but with the discontinuance of manufacturing in 2021, the machines might live residing on borrowed time.
In my closing tip, I compiled an inventory of the amend 50 Unix instructions. each of the commands I mentioned can live create on...
the properly three Unix versions: Solaris, AIX and HP-UX. listed here, i'll walk you in the course of the background of these Unix flavors, talk about some their primary ameliorations and immediate with a command table comparison of critical tasks.
sun SolarisSolaris, sun's Unix version, turned into basically the successor of SunOS, going returned to1992. SunOS turned into originally based on the BSD relish of Unix, while SunOS types 5.0 and later are based on Unix apparatus V release 4 (rebranded as Solaris).
How did this ensue? Let's depart additional again in time. SunOS edition 1.0 became added in 1983 with advocate for sun-1 and solar-2 methods. edition 2.0 was added in 1985 -- its declare to reputation became virtual file system (VFS) and NFS. In 1987, AT&T and solar announced that they would drudgery together on a job to merge system V and BSD into one unencumber, in keeping with SVR4. Solaris 2.four changed into solar's first Sparc/x86 unlock. The final unlock of SunOS changed into version four.1.four in November 1994. Solaris 7 changed into its first sixty four-bit ultra Sparc release and added aboriginal aid for file system metadata logging. Solaris 9, delivered in 2002, delivered aid for Solaris quantity manager and Linux capabilities. Solaris 10 become first introduced in 2005, which has a brace of innovations, together with advocate for its unique ZFS file system, Solaris Containers and logical Domains.
Solaris is presently up to edition 10; the latest update turned into launched in October 2008. amongst its innovations is usher for paravirtualization, the position Solaris 10 is used as a guest in Xen-based mostly environments.
simple transformations and exciting features. Solaris is free and open supply, disbursed through the OpenSolaris operating equipment. Solaris is a extra command-line based Unix working system than HP-UX or AIX. As a realistic live counted, it doesn't hold anything else akin to system Administration supervisor (SAM) on HP-UX or gadget administration Interface device (SMIT) on AIX. Solaris runs on Sparc and x86 environments. It additionally has the most up-to-date file gadget round -- ZFS, which has made super strides in recent years, including the capacity to now expend it as its root file equipment. ZFS has the competencies to live the most desirable all-around Unix file system. Solaris has many the perquisite way to achieve into result virtualization, including Containers/zones, xVM Server, logical Domains and hardware partitioning.
Hewlett-Packard HP-UXHP-UX, Hewlett-Packard's Unix, was originally based on apparatus V free up three. It in the nascence ran exclusively on PA-RISC HP 9000 platform. version 1 of HP-UX changed into released in 1984. version 9, delivered its persona-based mostly graphical user interface (GUI), SAM, from which one administrates the gadget. version 10, added in 1995, brought adjustments within the design of the apparatus file and listing constitution, making it corresponding to AT&T SVR4. version 11 turned into brought in 1997 and became HP's first free up to assist sixty four-bit addressing. In 2000, it changed into rebranded to 11i, when HP added working environments, bundled companies of layered functions for certain IT purposes. In 2001, edition eleven.20 added assist for Itanium methods. HP-UX become the primary Unix that used entry control Lists (ACLs) for file permissions and turned into moreover one of the vital first to introduce constructed-in advocate for logical volume manager. nowadays, HP-UX uses Veritas as its primary file device due to the immediate partnership between Veritas and HP. HP-UX is currently as much as unencumber 11iv3, update four.
primary transformations and enjoyable qualities. HP-UX is the first of the Unix programs to permit its consumers to buy certain operating environments. as an instance, in case you are searching for its tall availability (HA) product Serviceguard, you could possibly buy the specific product that bundles in HA. HP-UX is the simplest version that uses a third-celebration file gadget -- Veritas (solar used to tender this decades ago). HP has many forms of virtualization, together with nPartitions, vPars, Integrity digital Machines (IVMs) and useful resource partitions. This does hold an inclination to addle some folks as a result of there are such a lot of choices. HP-UX runs on each HP 9000s and Integrity Itanium techniques. HP-UX 11v3 can assist up to 128 processor cores. HP-UX provides for a really astounding command line moreover its menu bases device, SAM. performance tuning the expend of kctune is in lots of ways simpler to what AIX and Solaris present.
IBM AIXAIX become added via IBM in 1986. whereas it is in line with Unix device V, it moreover has BSD roots and, greater than some other taste, is a hybrid of each. AIX is the first OS to introduce a journaled file gadget (JFS). It become moreover the first to hold an built-in logical volume manager (LVM). IBM first ported AIX to its RS/6000 platform in 1989. edition 5L turned into a step forward free up introduced in 2001 that provided for Linux affinity and logical partitioning with the Power4 servers. In 2004, AIX added virtualization in AIX 5.3. superior vigour Virtualization (APV) provided micro-partitioning, shared processor pools and Symmetric multi-threading. In 2007, IBM stronger its virtualization product, coinciding with the unencumber of AIX 6.1 and the Power6 structure. It additionally rebranded APV to PowerVM. The AIX enhancements blanketed a sort of workload partitioning known as WPARs, which can live comparable to than Solaris zones/Containers however with superior performance. The newest release is AIX 6.1.
simple alterations and unique traits. IBM is generally diagnosed as having the optimum virtualization product on the midrange, PowerVM. Some fresh innovations include reside software mobility (enabling one to fail over working partitions without taking downtime), dynamic reminiscence Sharing and distinctive shared processor pools. No different flavor of Unix can vaunt these virtualization features, nor can they in shape IBM's forty-year history of virtualization -- PowerVM has evolved from mainframe/system z virtualization.
AIX runs most effectual on IBM energy systems -- with no endeavor the most powerful of midrange Unix servers. IBM sells the undeniable fact that AIX runs solely on vigour as a plus since it is thoroughly optimized on this structure and it has a clear road map around which the industry adheres to religiously. it can moreover live referred to that one could rush each Linux and AIX partitions on this platform. Its LX86 virtualization add-on enables one to rush x86 Linux purposes that don't look to live ported to the vigor structure. AIX has every bit of the time had an built-in logical volume supervisor, unlike other flavors that require add-on products. AIX is the best Unix that has continued to develop market participate in simultaneous years, partly as a result of the capabilities of its vigour hardware that continues to steer the container in reliably, availability and scalability.
Command reference comparisonWhat are you making an attempt to do? Solaris AIX HP-UX Specify order of appellation server resolution /etc/nsswitch.conf /and so on/netsvc.conf etc/nsswitch.conf Configure networking /and so on/nodename, /and so forth/netmasks, etc/defaultrouter, ifconfig suggestion is to expend SMIT, as a result of ifconfig does not retain alterations, lsattr set_parms - preliminary, netconf file, ioscan be mindful obtainable file techniques ufs, zfs jfs, jfs2 hfs, VxFS Add house to file methods growfs chfs extendfs study character-primarily based admin GUI None. Admintool become retired years in the past. SMC (akin to AIX's WebSM) is the GUI SMIT, smitty, WebSM SAM determine hardware alterations prtconf lscfg, lsattr, prtconf ioscan, dmesg View swap areaswap lsps swapinfo verify file device data /and so on/vfstab /and many others/file systems /and so forth/fstab Share NFS shareexportfs exportfs examine software and/or filesets pkginfo, pkgchk lslpp, lssrc swlist deploy software pkgadd smit installation swinstall check error logs prtdiag errpt dmesg Tune the kernel prtctl and /and so on/equipment vmo, ioo, no, schedo, nfso, chdev kctune beginning/cease facilitiesSvcadm, svcs lssrc, stopsrc, startsrc continually initiated via scripts from init.d I.E. for network -- /and so on/init.d/internet startInstall contraptions drvconfig cfgmgr insf
in regards to the creator: Ken Milberg is a programs consultant with two many years of relish working with Unix and Linux methods. he's a SearchEnterpriseLinux.com demand the consultants consultant and columnist.
What did you consider of this characteristic? Write to SearchDataCenter.com's Matt Stansberry about your facts focus concerns at firstname.lastname@example.org.
Microsoft’s home windows working systems account for the biggest participate of server spending in the records middle, however home windows is by way of no potential the handiest demonstrate in town: Linux’s market participate in certain is starting to live strongly. It’s growing to live as a result of in crimson Hat commercial enterprise Linux (RHEL) and SUSE Linux enterprise Server (SLES) there are at the least two distros that are viewed as commercial enterprise capable and preempt for the large time, and moreover since it’s affordable, manageable, respectable for virtualization and it runs the software that many individuals wish to use. there are lots of extra motives as neatly.
What that capacity is that there is usually many extra “enormously combined” records core environments (meaning environments operating a significant variety of servers using both windows and Linux) in the future than there had been during the past. home windows-best records facilities, or ones which simplest rush the bizarre Linux server or two, will become more and more rare.
but how accomplish you manage blended environments? working distinctive management systems for each and every platform is inefficient and would power many directors nuts. besides, the entire aspect of a administration gadget is to enable the monitoring and controlling of each apropos device in a solid from a separate console. not from two or three.more On mixed Environments
Virtualization makes things even more advanced: How accomplish you control home windows and Linux servers which may well live operating on physical servers or as virtual machines running on Microsoft’s Hyper-V, VMware’s ESX, or the Xen hypervisor?Competing administration selections
if you're coming from a home windows atmosphere and poignant towards a mixed ambiance by way of enforcing Linux, then you definately might moreover already live using Microsoft’s system middle administration system. system middle’s Operations manager 2007 module now contains (in beta) a pass Platform Extensions pack with aid for:
digital machines are managed from device core using the virtual desktop supervisor 2008 (VMM) module, which moreover supports digital machines operating on VMware’s ESX server in addition to Hyper-V. And VMM additionally integrates with VMware’s VI3 utility in order that it may moreover live used to carry out VI3 management operations. as an example, it's viable, from within VMM, to initiate a VMotion operation which strikes a running VMware virtual computer from one actual host to an additional without stopping the digital laptop. (Microsoft at the jiffy has no equivalent to VMotion —its brief Migration contains stopping the digital desktop for some seconds as it is moved to a brand unique host.)
by the expend of competition Novell offers its Zenworks administration system, which includes computer and mobile device management as well as administration services for the following server structures:
both of those administration techniques allow the management of home windows and both SLES and RHEL, but Microsoft looks to pick the previous over the latter. Demonstrating this, the enterprise signed a set of agreements with Novell in November 2006 to drudgery in opposition t more suitable interoperability between windows and SLES in four areas:
The deal, which runs as a minimum until 2012, has been handled with a very friendly deal of suspicion by way of many americans, partly because it can with ease live construed as a means for Microsoft to come by a “pet” Linux distro which it will probably control and expend to come by an improved knowing of Linux and valued clientele’ motives for desirous to expend it for its personal talents. The deal includes an shrink for Microsoft to forbear from taking legal action against Novell’s shoppers for the expend of Linux (which Microsoft claims infringes quite a lot of of its patents,) and additionally contains Microsoft making funds to Novell (and hence in some way subsidizing SLES.) one way this is executed is with the aid of purchasing aid coupons from Novell, which Microsoft then sells on to its customers at a discount.
probably the most terrific results of the agreement is that SLES 10 is now the only Linux distro collectively supported via both companies as a visitor working system virtualized on Hyper-V, and windows Server 2008 is jointly supported when rush as a paravirtualized visitor on SLES the usage of the Xen hypervisor protected with the distro.“The interop agreement is alive and dealing …”
despite the suspicion, many agencies view the interoperability settlement as a friendly step and are satisfied to retract potential of the advantages it offers. “The interop agreement is alive and dealing, and the incontrovertible fact that it's an extended time age agreement is decent news,” says Nick Leake, Director of Operations and Infrastructure at ITV, a UK-based mostly industrial broadcasting enterprise which runs about 200 home windows servers and one hundred SLES servers.
ITV has taken talents of the settlement between Microsoft and Novell to purchase discounted usher coupons for SLES, but Leake says this did not hold an result on his resolution to implement SLES in the first location. “We made the determination 4 years ago, earlier than the Novell - Microsoft interop agreement,” he says. “We carried out an contrast system before making the mindful selection to depart together with SUSE. They selected now not to depart together with red Hat because they don’t hold the equal date stage with valued clientele as SUSE, and when the Microsoft Novell deal came along [it] without problems verified that they had made the preempt determination.”
Leake moreover says that the potential to manage SLES from within Microsoft’s apparatus focus is awfully crucial—despite the fact ITV opted to expend Novell’s Zenworks to maneuver both systems. He says usher for the operating programs in every different’s digital environments is moreover advisable.
As Linux becomes more and more authorized it’s likely that combined records core environments will become further and further normal. What’s more, the lines between different systems will become extra blurred as virtualization—including VMware’s imaginative and prescient of servers that can live moved inside an inner cloud and out to external cloud service suppliers - and stronger interoperability gain it viable to treat home windows and Linux servers—both physical and virtual—conveniently as computing supplies which might live provisioned and managed with the selfsame tools in the selfsame approach.
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In my final 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 immediate with a command table comparison of notable 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 advocate 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 drudgery 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 final release of SunOS was version 4.1.4 in November 1994. Solaris 7 was its first 64-bit Ultra Sparc release and added aboriginal advocate for file system metadata logging. Solaris 9, introduced in 2002, added advocate for Solaris Volume Manager and Linux capabilities. Solaris 10 was first introduced in 2005, which has a number of innovations, including advocate for its unique 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 advocate 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 hold 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 powerful strides in recent years, including the skill to now expend 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, 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 advocate 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 advocate 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 introduce built-in advocate for logical Volume Manager. Today, HP-UX uses Veritas as its primary file system due to the immediate 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 tender this many years ago). HP has many forms of virtualization, including nPartitions, vPars, Integrity Virtual Machines (IVMs) and resource partitions. This does hold a drift to addle some folks because there are so many choices. HP-UX runs on both HP 9000s and Integrity Itanium systems. HP-UX 11v3 can advocate 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 introduce a journaled file system (JFS). It was moreover the first to hold 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 moreover rebranded APV to PowerVM. The AIX enhancements included a contour 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 include live application mobility (allowing one to fail over working partitions without taking downtime), dynamic 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 clear road map around which the company adheres to religiously. It should moreover live illustrious that one can rush both Linux and AIX partitions on this platform. Its LX86 virtualization add-on allows one to rush 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 participate in recent years, partly because of the capabilities of its Power hardware that continues to lead the field in reliably, availability and scalability.
Command reference comparisonWhat 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 expend 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 error 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 demand the Experts advisor and columnist.
What did you deem of this feature? Write to SearchDataCenter.com's Matt Stansberry about your data focus concerns at email@example.com.
HP decided to aid the Linux file system innovation by open sourcing its Tru64 Advanced File System, or AdvFS. This file system comes from Digital Unix (created by Digital apparatus Corporation) and is used by HP customers in mission-critical deployments. After several acquisitions, HP created HP-UX, a flavor of Unix, with its own file system. Tru64 AdvFS was offered to DEC (acquired by Compaq ten years ago), Compaq and HP customers. Compaq and HP became one separate company in 2002.
HP decided to expend the second version of the GPL license for its file system, so it can live compatible with the license used by the Linux kernel (which moreover uses GPLv2). A developer can retract every bit of the parts they want from AdvFS and expend them in different applications.
Martin Fink, senior vice president and common manager, industry critical Systems at HP, said: "To ensure the highest levels of data security and availability, Linux customers exigency complete and immediate access to established technology. They continue to invest their engineering resources in the development of that technology, while working with the open source community to ensure accessibility and seamless integration."
AdvFS is a tall performance journaling file system that allows snappy recovery after a system crash. Thanks to its dynamic structure, one can manage the file system on the soar and once more, on the fly, system snapshots can live created.
AdvFS's storage pool is called "file domain" (made up of screen devices) and its logical file systems are called "file sets". The latter can live balanced, which means that the content on these sets can live balanced across physical volumes. The snapshots, or clones, allow a system administrator to easily create on-line backups; an arresting feature of AdvFS is the one that allows a sysadmin to add or remove screen devices from a file domain even if the latter has dynamic users. This feature is really friendly when it comes to migrating to larger devices or from faulty hardware without shutting down the system.
This file system supports volumes that hold a maximum size of 16 TB and the names of the files must not hold more than 255 bytes in length.
Many commercial Unix vendors hold enhanced backup tools with decent error recovery built in. AIX has the aptly named backup and restore, while HP-UX has fbackup and frecover. Those, too, unfortunately, lack accelerate 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 hold entered partnerships with third-party tools to live delivered as participate of their OS. Sometimes these tools are affliction versions that require complete licensing for continued use. Freeware tools are moreover available, particularly in the case of Linux. In fact, for the administrators running Linux, the field of selection is increasing at an incredible pace. retain in mind, however, that many GNU tools will compile and rush just fine on commercial Unixes.
What are the options and how accomplish you settle what to use? Why pay for a package when others are available for the cost of a download?
I'll Tell you a secret. Some pretty slick commercial packages are moreover available free of charge, provided that you expend 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 trustworthy backup utility. The inequity is that the personal (or free) edition will not back up remotely mounted drives or Samba shares, or allow the expend of remote tape drives. If you are running a separate server at home, this is silent a pretty friendly 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 fancy indexes stored at the nascence of the tape and graphical search tools is taper, which is designed specifically for Linux.
Free tools tender the hard-to-beat argument of low price while silent providing reliability. Commercial tools generally provide maturity and facile to expend interfaces. Multiplatform advocate is another issue. If you exigency to drudgery 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 hold to spend the money. For instance, imagine a network of several Windows workstations, a Solaris Web server, an AIX machine, a DGUX server, a brace of NT boxes, and a Novell server. This benevolent of mixed environment is not unusual, so many commercial vendors will retract 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 implement friendly tape rotation practices with strict, built-in rule sets.
Even in this complex environment, it's not so chop 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 expend 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 expend 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 retract up the slack? What about data recovery, the very understanding 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 consider 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 silent 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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