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Dell PowerEdge

Rack-mounted 8th- and 9th-generation PowerEdge servers
Rack-mountable 11th generation PowerEdge R610 server with the case opened and the front bezel removed

Dell gives the name PowerEdge (PE) to its server product line.

Most PowerEdge servers use the x86 architecture. The early exceptions to this, the PowerEdge 3250, PowerEdge 7150, and PowerEdge 7250, used Intel's Itanium processor, but Dell abandoned Itanium in 2005 after failing to find adoption in the marketplace.[1] The partnership between Intel and Dell remained close, with Intel remaining the exclusive source of processors in Dell's servers until 2006. In May 2006 Dell announced that it also intended to develop servers using AMD Opteron processors.[2] The first Opteron-based PowerEdge systems, the PowerEdge 6950 and the PowerEdge SC1435, appeared in October 2006[3]

PowerEdge machines come configured as tower, rack-mounted, or blade servers. Dell uses a consistent chip-set across servers in the same generation regardless of packaging,[4] allowing for a common set of drivers and system-images.

OEMs and VARs also offer solutions based on PowerEdge servers. Loaded with custom software and with minor cosmetic changes, Dell's servers form the underlying hardware in certain appliances from IronPort,[5] Google,[6] Exinda Networks,[7] and Enterasys.[8]

In 2007 the PowerEdge line accounted for approximately 15% of Dell's overall revenue from computer-hardware sales.[9] In recent years Dell has been transitioning from a pure hardware vendor to a solutions-provider and services company, as evidenced, for example, by the acquisition of Perot Systems and KACE Networks[10] and the setup of a special global services department within Dell[11]

Contents

PowerEdge RAID Controller

Among the standard hardware components of a server, note Dell's proprietary PowerEdge-specific PERC (PowerEdge RAID Controller).[12] The related software in the PERC Fault Management Suite offers facilities such as the Background Patrol read, which aims to fix bad sectors on online RAID disks running under some of the more recent PERC controllers. The Dell PERC5/i and PERC6/i Hardware RAID Controller Cards have become incredibly popular among computer enthusiasts as an inexpensive but relatively powerful alternative to the "FakeRAID" included on most motherboards' SATA Controllers. These cards are equipped with Intel or LSI RAID Controller Chips, 256MB of cache (upgradeable on the 5/i to 512MB), support up to 8x SATA 3.0Gbps drives without the use of expanders, support RAID5 (and for the PERC6/i, RAID6), have an optional Battery Backup Unit (BBU) to allow more flexible use of the onboard cache during writes greatly enhancing performance in RAID5 and 6, and operate over the PCI-Express interface specifically PCI-E x8. It is not uncommon to find either model on eBay for sale including the optional BBU, both SAS-to-4xSATA breakout cables, and occasionally even an upgraded cache (PERC5/i only), at a relative bargain price compared to nearly every other SAS RAID HBA available. $30-50 is typical for the PERC5/i, with the PERC6/i usually commanding a $10 or so premium due to its RAID6 capabilities and enhanced processor. One big downside for some is the inability of the processors on either card to "cope with" more than one to two modern higher-end SATA 6.0Gbps Solid State Drives, particularly in RAID0, with the card topping out at around 620-690MB/sec regardless of how many drives are in the array. This is not an issue for most mechanical drives which top out at no more than ~200MB/sec Peak Sequential R/W speeds (Western Digital Caviar Blue 1TB WD10EZEX 1TB-Platter or the Seagate Barracuda 1-3TB Drives with 1TB-Platters can touch 200MB/sec, with the WD VelociRaptor 1TB 10,000RPM HDD occasionally able to do so); most drives, including all Western Digital Caviar Black and Hitachi Ultrastar models (specifically known for being "ultra-high performance drives for enthusiasts and power users"), top out at around 135-160MB/sec Peak Sequential R/W. Still, for enthusiasts looking to achieve incredible transfer speeds by using 8 or more Solid State Drives in RAID0, it is necessary to spend significantly more money on a model like the new LSI 927x series which utilize SAS/SATA6Gbps and PCI-Express Revision 3.0; this combination of factors, particularly the highly advanced Dual-Core SoC RAID Processor Chips utilized, allow for an order of magnitude greater transfer rates and IOPS. Some have seen more than 3,000MB/sec in both Read and Write (Seq) Speeds utilizing these new cards. Nevertheless, for usage in a home server or with purely mechanical drives, the PERC5/i and PERC6/i offer a value that is unbeatable.[13][14]

Model naming convention

Since the introduction of the Generation 10 servers in 2007 Dell has adopted a standardized method for naming their servers; the name of each server is now represented by a letter followed by 3 digits. The letter indicates the type of server: R (for Rack-mountable) indicates a 19" rack-mountable server, M (for Modular) indicates a blade server, whilst T (for Tower) indicates a stand-alone server.[15]

This letter is then followed by 3 digits:

  • The first digit refers to the number of sockets in the system: 1 to 3 for one socket, 4 to 7 for two sockets, and 9 for four sockets. 8 can be either two or four sockets depending on generation and CPU make [16][17]
  • The middle digit refers to the generation: 0 for Generation 10, 1 for Generation 11, and so on.
  • The third digit indicates the make of the CPU: 0 for Intel or 5 for AMD.

For example: The Dell PowerEdge M610 is a two-socket server of the 11th generation using an Intel CPU whilst the R605 is a two-socket AMD-based rack-server of the 10th generation.[18]

Prior to the Generation 10 servers, the naming convention was as follows:

  • First digit – Height of the server in rack units
  • Second digit – Generation of server (up to 9th generation)
  • Third digit – Server type (5 for rack server, 0 for tower server, although tower servers could be outfitted with a rack chassis)
  • Fourth digit – Indicated whether blade or normal (5 for blade, 0 for normal)

Example 1: PowerEdge 2650 ( 2 = 2U server, 6 = 6th generation, 5 = rack server, 0 = normal )

Example 2: PowerEdge 6950 ( 6 = 4U server, 9 = 9th generation, 5 = rack server, 0 = normal )

Example 3: PowerEdge 2800 ( 2 = [based on] 2U server 2850, 8 = 8th generation, 0 = tower server, 0 = normal )

Example 4: PowerEdge 1855 ( 1 = 1U server, 8 = 8th generation, 5 = rack server, 5 = blade )

Most servers had a tower equivalent. For example, the PowerEdge 2800 was the tower equivalent of the 2850. The naming applies to the tower version too, but the tower version will usually be between 5U and 6U.

See also

  • Daftar/Tabel -- Dell PowerEdge Servers

References

  1. ^ Dell to Phase Out Computers Using Intel's Itanium
  2. ^ Press Release — Dell's International And Enterprise Business Drives First Quarter Revenue Growth
  3. ^ Press Release — Dell Unveils Four- and Two-Socket Servers
  4. ^ Dell Extends the Scalable Enterprise with Eighth-Generation PowerEdge Servers
  5. ^ Dell Case-studies on the IronPort Email-security Appliance:Partners in Stopping Crime, February 2006, retrieved 28 June 2011
  6. ^ Dell Case-studies on the Google Search Appliance: - In Search Mode, June 2007, retrieved 28 June 2011
  7. ^ ITWorld Canada website: Quad CPUs gives Exinda WAN optimization a kick, 21 July 2010, visited 28 June 2011
  8. ^ Dell Case-studies: Enterasys- Serving up Security
  9. ^ Press Release — Dell Reports Preliminary Revenue of $14.4 Million
  10. ^ Blog of Kristen Mathis What Dell-Perot merger means for IT, 28-2-2010, visited 28 June 2011
  11. ^ PCWorld Dell Launches Dedicated Services Organization, December 2009, visited 28 June 2011
  12. ^ "Dell PowerEdge RAID Controller (PERC)". Retrieved 2011-02-26. 
  13. ^ Habas, Drew; John Sieber (February 2006). "Background Patrol read for Dell PowerEdge RAID Controllers" (PDF). Dell Power Solutions. Dell Inc. pp. 73–75. Retrieved 2008-07-20. "a proactive tool [...] to help avert [...] data problems by fixing the bad sectors when all of the drive array members are online and redundant." 
  14. ^ Dell SCSI Storage Solution Team (2005-11-17). "A Reference Guide for Optimizing Dell SCSI Solutions" (PDF). Dell. p. 33Bad page specification here. Retrieved 2009-09-14. "Patrol Read is a preventative maintenance background operation (available only on PERC 3 (except PERC 3/DI), PERC 4 and PERC 4e controller families running 3.0 and higher firmware)." 
  15. ^ Infoworld website Dell revamps Poweredge line, 12 November 2007, visited 28 June 2011
  16. ^ http://www.dell.com/us/enterprise/p/p oweredge-r810/pd
  17. ^ http://www.dell.com/us/enterprise/p/p oweredge-r815/pd
  18. ^ Serverwatch website Spotlight on Dell, 15 May 2008, visited 28 June 2011

External links

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