I havent used this in years and do not plan to. Help me find it a new home.
Info from EveryMac:

The Xserve Xeon Nehalem 2.26 "Quad Core" (Early 2009) is powered by a 2.26 GHz Quad Core 45-nm Xeon E5520 (Nehalem) processor with a dedicated 256k of level 2 cache for each core and 8 MB of "fully shared" level 3 cache. This model also could be ordered with asecond 2.26 GHz Quad Core Xeon E5520 (Nehalem)processor, or custom configured withdual 2.66 GHz Quad Core Xeon (X5550)processors ordual 2.93 GHz Quad Core Xeon (X5570)processors.

By default, it was configured with 3 GB of 1066 MHz DDR3 ECC SDRAM, a 160 GB (7200 RPM, 8 MB cache) hot-plug "Apple Drive Module" (a 128 GB SSD option -- which does not occupy a drive bay -- was available for an additional US$500), an 8X dual-layer "SuperDrive", and NVIDIA GeForce GT 120 graphics with 256 MB of GDDR3 memory. Ports include Mini DisplayPort (VGA and DVI supported with optional adapters), three USB 2.0 ports, and two Firewire "800" ports.

Compared to the "Early 2008"Xservethat it replaced, the Xeon Nehalem 2.26 "Quad Core" (Early 2009), uses a substantially faster architecture that supports "Hyper-Threading" -- which "allows two threads to run simultaneously on each core" -- and "Turbo Boost" -- which "automatically boosts the processor speed based on workload" (so if an application is only using one core it will automatically increase the speed of the core in use and turn off the unused cores). It alsoreplacesthe frontside bus with a new "QuickPath Interconnect" (QPI) system described as a "offerrectional, point-to-point connection" that provides "quick access to the disk, I/O, and other Xserve subsystems". Apple reported that these improvements add up to "twice the performance" of the previous system.

Despite the age of this system, site sponsorOther World Computinghas RAM, hard drives, SSDs, and other upgrades available forthis specific Macwhile supplies last.

Introduction Date:April 7, 2009Discontinued Date:January 31, 2011*Processors:1 (4 Cores)Architecture:64-BitGeekbench 2 (32):7292Geekbench 2 (64):8254Geekbench 3 (32):1723Geekbench 3 (32):6189Geekbench 3 (64):1907Geekbench 3 (64):7126Geekbench 4 (SC):2197Geekbench 4 (MC):7187Geekbench 5 (SC):439Geekbench 5 (MC):1673Processor Speed:2.26 GHzProcessor Type:Q. Core Xeon E5520Details:The standard configuration has a single 64-bit 45-nm Xeon E5520 (Nehalem) processor with four independent processor "cores" each with a dedicated 256k level 2 cache, 8 MB of "fully shared" level 3 cache, an integrated memory controller, and "a 128-bit SSE4 SIMD engine". It also supports "Hyper-Threading" -- which "allows two threads to run simultaneously on each core" -- and "Turbo Boost" -- which "automatically boosts the processor speed based on workload" (so if an application is only using one of the four cores it will automatically increase the speed of the core in use and turn off the unused cores).Turbo Boost:2.53 GHzCustom Speeds:2.26, 2.66, 2.93 GHz*Processor Upgrade:N/AFPU:IntegratedSystem Bus Speed:QPI*Cache Bus Speed:2.26 GHz (Built-in)ROM/Firmware Type:EFIEFI Architecture:64-BitL1 Cache:32k/32k x4L2/L3 Cache:256k (x4), 8 MB*RAM Type:DDR3 ECC SDRAM*Min. RAM Speed:1066 MHzDetails:Uses "1066 MHz DDR3 ECC memory" (PC-8500) modules.Standard RAM:3 GBMaximum RAM:96 GB*Details:3 GB of RAM installed as three 1 GB modules.

*As originally shipped on April 7, 2009, Apple reported that the Eight Core custom configurations hold 24 GB of memory. On December 4, 2009, Apple formally added support for 4 GB modules and increased the maximum memory to 48 GB. However, third-parties have confirmed that the Eight Core configurations actually support 96 GB of RAM using 8 GB modules.

Apple additionally reports that the operating "system supports up to 32 GB in Mac OS X Server v10.5" and "up to 96 GB in Mac OS X Server v10.6".

In the US (and many other countries), site sponsorOther World Computingsells memory -- as well as other upgrades -- forthis Xserve.

In Germany, site sponsorCompuRAMsells RAM and other upgrades forthis Xserve.

In Australia, site sponsorUpgradeablesells RAM and other upgrades forthis Xserve.

Also see:Actual Max RAM of All G3 & Later Macs.Motherboard RAM:NoneRAM Slots:6*Video Card:GeForce GT 120VRAM Type:GDDR3 SDRAMDetails:Apple reports that this Xserve model has "NVIDIA GeForce GT 120 graphics with 256 MB of GDDR3 memory and Mini DisplayPort output". Adapters to VGA and DVI output are sold separately.Standard VRAM:256 MBMaximum VRAM:256 MBDisplay Support:N/AResolution Support:N/ADetails:N/A2nd Display Support:None2nd Max. Resolution:N/ADetails:Single display supported in default configuration. Additional displays can be supported with expansion cards.Standard Storage:160 GB HDDStd. Storage Speed:7200 RPMDetails:Default hard drive is a 160 GB 7200 RPM SATA "Apple Drive Module" with 8 MB of cache. Apple also offered 1 TB and 2 TB 7200 RPM SATA drives with 32 MB of cache as US$200 and US$400 options, respectively, (2 TB option beginning December 4, 2009) as well as a 128 GB SSD (which does not occupy a drive bay) for an additional US$500.

In the US (and many other countries), site sponsorOther World Computingsells storage upgrades forthis Xserve.

In Australia, site sponsorUpgradeablesells hard drives and other upgrades forthis Xserve.

Also see:SSD Compatibility Guide for All G3 & Later Macs.Storage Dimensions:3.5" (25.4 mm)Storage Interface:SATA/SASStandard Optical:8X DL "SuperDrive"Standard Disk:NoneStandard Modem:NoneStandard Ethernet:Gigabit (x2)Details:The system has "two independent 10/100/1000BASE-T [Gigabit] Ethernet (RJ-45) interfaces with support for jumbo frames."Standard AirPort:NoneStandard Bluetooth:NoneUSB Ports:3 (2.0)Firewire Ports:2 (800)Expansion Slots:2 PCIe 2.0 x16*Expansion Bays:3 3.5"Details:Apple explains that this system offers "two open PCI Express 2.0 x16 expansion slots: one half-length (6.6-inch) and one 9.25-inch length".

In the default configuration, one external 3.5" bay is occupied by a hard drive and two bays are free. If configured with an SSD, the SSDdoes not occupy a drive bay.Incl. Keyboard:NoneIncl. Input:NoneCase Type:Rack-MountableForm Factor:Xserve IntelApple Order No:MB449LL/AApple Subfamily:Early 2009Apple Model No:A1279 (EMC 2279)Model ID:Xserve3,1Details:Please note that these identifiers often refer to more than one model.

Also see: All Macs with theA1279Model Number, the2279EMC Number, and theXserve3,1Model Identifier.

For more about these identifiers and how to locate them on each Mac, please refer to EveryMac.com'sMac Identificationsection.Battery Type:N/ABattery Life:N/APre-Installed MacOS:X Server 10.5.6Maximum MacOS:X 10.11.6*Minimum Windows:None*Maximum Windows:None*MacOS 9 Support:NoneWindows Support:N/ADetails:N/ADimensions:1.73 x 17.6 x 30.0Avg. Weight:30.8 lbs. (14.0 kg)Original Price (US):US$2999Est. Current Retail:N/ADetails:Please note that on average the estimated currentretailpricing of used systems is updated twice a year (please refer to the date on the bottom of the page for the date last updated).Info from Apple:
Xserve (2009) - Technical SpecificationsIn the box

• Xserve
• Rack mounting hardware
• 6' and 10" power cords
• Mac OS X Server v10.6 Install DVD
• Administration Tools CD
• Printed and electronic documentation

Processor

• One 2.26GHz or two 2.26GHz, 2.66GHz, or 2.93GHz Quad-Core Intel Xeon 5500 series “Nehalem” processors
• 8MB shared L3 cache per processor
• Three-channel integrated memory controller per processor
• Hyper-Threading support with two threads per core (up to 16 virtual cores)
• Turbo Boost for increased performance under dynamic workloads (up to 3.33GHz on a 2.93GHz processor)
• QuickPath Interconnect
• 128-bit SSE4 SIMD engine
• 64-bit data paths and registers
• Energy efficiency optimization

Memory

• 1066MHz DDR3 ECC memory
• Six DIMM slots (quad-core) or twelve DIMM slots (8-core) configurable to up to 48GB of SDRAM
• System supports up to 96GB in Mac OS X Server v10.6

Storage

• Three independent hot-plug drive bays with support for qualified SATA or SAS drives; support for up to 6TB of hot-plug internal storage1using the following drive modules:
  • 160GB 7200-rpm SATA drive with 8MB disk cache2
  • 1TB 7200-rpm SATA drive with 32MB disk cache2
  • 2TB 7200-rpm SATA drive with 32MB disk cache2
  • 450GB 15,000-rpm SAS drive available as a third-party kit
• Xserve drive bays support Apple-qualified drive modules with Apple-qualified hard drives and firmware only. Drive bays not configured with a qualified drive module ship with a nonfunctional blank drive carrier and do not support installation of nonqualified third-party hard drives.
• Support for reading SMART data from Apple Drive Modules for prefailure notification
• Software RAID 0 and 1 built into Mac OS X Server
• Optional 128GB solid-state drive
• Optional Xserve RAID Card with 512MB cache and 72-hour cache battery backup; support for RAID 0, 1, and 5
• 8x SuperDrive DL (DVD±R DL/DVD±RW/CD-RW)

I/O connections

• Two open PCI Express 2.0 x16 expansion slots: one half-length (6.6-inch) and one 9.25-inch length
• Two independent 10/100/1000BASE-T (Gigabit) RJ-45 Ethernet interfaces with support for jumbo frames
• Two FireWire 800 ports on back panel; 15W total power
• Two USB 2.0 ports (480Mb/s each) on back panel; and one USB 2.0 port on front panel
• One DB-9 serial port (RS-232)

Video and graphics support

• NVIDIA GeForce GT 120 graphics with 256MB of GDDR3 memory and Mini DisplayPort output
• VGA output using Mini DisplayPort to VGA Adapter (sold separately)
• DVI output using Mini DisplayPort to DVI Adapter (sold separately)

Rack support

• Fits EIA-310-D-compliant, industry-standard four-post racks and cabinets: 19 inches wide, 24 to 36 inches deep
• Front-to-back cooling for rack enclosure
• Support for square-hole racks or threaded racks based on mounting kit selection

Electrical requirements

• Output power: 750W
• Optional second load-sharing 750W power supply for redundancy
• Line voltage: universal input (100V to 240V AC), power factor corrected
• Maximum input current: 8.0A (100V to 120V) or 4.0A (200V to 240V); current is shared when system is configured with two power supplies
• Frequency: 50Hz to 60Hz, single phase

Environmental requirements

• Operating temperature: 50° to 95° F
  (10° to 35° C)
• Storage temperature: –40° to 116° F
  (–40° to 47° C)
• Relative humidity: 5% to 95% noncondensing
• Maximum altitude: 10,000 feet
• FCC Class A approved

Size and weight

• Height: 1.73 inches (4.4 cm)
• Width: 17.6 inches (44.7 cm) for mounting in standard 19-inch rack
• Depth: 30 inches (76.2 cm)
• Weight: 30.8 pounds (14.0 kg) base configuration; 38.3 pounds (17.4 kg) for 8-core system with twelve DIMMs, three 1TB SATA Apple Drive Modules, and two power supplies3

Software

• Mac OS X Server v10.6 Snow Leopard Unlimited-Client License
• Included services
  • File and printer sharing: Mac (AFP, AppleTalk PAP, IPP), Windows (SMB/CIFS, IPP), UNIX and Linux (NFS, LPR/LPD), Internet (FTP, WebDAV)
  • Directory services: Open Directory (OpenLDAP, Kerberos, SASL), NT Domain Controller (Samba 3), Backup Domain Controller (BDC), LDAP directory connector, Active Directory connector, BSD configuration files (/etc), RADIUS
  • Mail services: SMTP (Postfix), POP and IMAP (Cyrus), SSL/TLS encryption (OpenSSL), mailing lists (Mailman), WebMail (SquirrelMail), junk mail filtering (SpamAssassin), virus detection and quarantine (ClamAV)
  • Calendaring: iCal Server 2 (CalDAV, iCalendar, iTIP, iMIP)
  • Distributed computing: Xgrid
  • File systems: HFS+ (journaled, case sensitive), read-only UFS
  • Web hosting: Apache web server (2.2 and 1.3), SSL/TLS (OpenSSL), WebDAV, PHP (5.2), Perl (5.8.8), Ruby (1.8.6), Rails (1.2.3), MySQL 5, Capistrano, Mongrel
  • Collaboration services: Wiki Server 2 (RSS), iChat Server 2 (Jabber/XMPP)
  • Application services: Apache Tomcat, Java Virtual Machine (J2SE 1.6)
  • Client management: Managed Preferences, NetBoot, NetInstall, NetRestore, Software Update Server, portable home directories
  • Networking and VPN: DNS server (BIND 9), DHCP server, NTP, Firewall (IPFW2), VPN server (L2TP, PPTP), Mobile Access Server, RADIUS, NAT server
  • Management features: Server Assistant, Server Admin, Server Preferences, Server Status widget, Workgroup Manager, System Image Utility, Secure Shell (SSH2), Server Monitor, RAID Utility, SNMPv3 (Net-SNMP)
  • High-availability features: automatic recovery, file system journaling, Software RAID, disk space monitor
  • Media streaming: QuickTime Streaming, QuickTime Status Report

    The new Xserve embodies Apple’s continuing environmental commitment. It is designed with the following features to reduce its environmental impact:

    • BFR-free
    • PVC-free (internal cables)
    • Highly recyclable aluminum and stainless steel enclosure
    • High-efficiency power supply (89% average)4
    Configuration OptionsStandard Configuration (MB449LL/A)Build-to-Order OptionsProcessorOne 2.26GHz Quad-Core Intel Xeon 5500 series processorDual 2.26GHz, 2.66GHz, or 2.93GHz processorsMemory3GB (three 1GB) 1066MHz DDR3 ECC SDRAMUp to 24GB (quad-core) or 48GB (8-core) 1066MHz DDR3 ECC SDRAMStorage160GB 7200-rpm SATA Apple Drive Module with 8MB of cacheUp to 6TB of internal storage using 160GB, 1TB, or 2TB 7200-rpm SATA Apple Drive ModulesInternal RAIDOptionalXserve RAID Card with 512MB cache and 72-hour cache battery backupInternal solid-state driveOptional128GB solid-state driveExpansionOptionalDual-Channel Gigabit Ethernet PCI Express Card
    Dual-Channel 4Gb Fibre Channel PCI Express Card
    Quad-Channel 4Gb Fibre Channel PCI Express CardPower supplySingle 750W high-efficiency power supplyDual redundant high-efficiency power suppliesRack supportSupports most industry-standard (EIA-310-D) four-post racks and cabinets with a rack depth of 24 inches to 36 inches deep; quick-deployment rails for square-hole racks eliminates need for cage nutsQuick-deployment rails for threaded (10/30-inch) or square-hole racksService and support90 days of telephone support and one-year limited warrantyOptional AppleCare extended service and support products available
    Xserve Accessories
    • Xserve RAID Card (MB844Z/A)
    • 1GB 1066MHz DDR3 ECC DIMM (MC228G/A)
    • 2GB 1066MHz DDR3 ECC DIMM (MC229G/A)
    • 4GB 1066MHz DDR3 ECC DIMM (MB982G/A)
    • 160GB SATA Apple Drive Module for Xserve (MB837G/A)
    • 1TB SATA Apple Drive Module for Xserve (MB838G/A)
    • 2TB SATA Apple Drive Module for Xserve (MC435G/A)
    • Promise 450GB SAS Drive Module for Xserve (TV823ZM/A)
    • Apple Dual-Port Ethernet Card (MB977G/A)
    • Apple Quad-Channel 4Gb Fibre Channel Card (MB843G/A)
    • Apple Dual-Channel 4Gb Fibre Channel Card (MB842G/A)
    • Promise 16TB SATA VTrak E-Class RAID Subsystem (TV299VC/A)
    • Promise 7.2TB SAS VTrak E-Class RAID Subsystem (TV271VC/A)
    • Apple 750W Power Supply for Xserve (MB841LL/A)
    • Xserve Rack Mounting Kit for Square Hole Racks (MA846G/A)
    • Xserve Rack Mounting Kit for Threaded Hole Racks (MA847G/A)
    • AppleCare Service Parts Kit for Xserve (MB846G/A)
    • AppleCare Premium Service and Support for Xserve (MB595LL/A)
    1. Maximum capacity of 6TB achieved through use of three 2TB Apple Drive Modules.
    2. 1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.
    3. Weight varies by configuration and manufacturing process.
    4. Average of the power supply’s measured efficiency when tested at 100 percent, 50 percent, and 20 percent of the power supply’s output power at 230V with the internal fan off.