Getting Started With Your System 3System FeaturesThe major hardware and software features of your system include:• Two, or four Quad-Core Intel® Xeon® Processors 7300 Series.• Support for symmetric multiprocessing (SMP), which is availableon systems with two or four Intel Xeon microprocessors. SMP greatlyimproves overall system performance by dividing microprocessoroperations between independent microprocessors. To take advantageof this feature, you must use an operating system that supportsmultiprocessing.NOTE: If you decide to upgrade your system by installing additionalmicroprocessors, you must order the microprocessor upgrade kits from Dell.Not all versions of the Intel Xeon microprocessor will work properly asadditional microprocessors. The upgrade kit from Dell contains the correctversion of the microprocessor as well as the instructions for performing theupgrade. All microprocessors must have the same internal operatingfrequency and cache size.• A minimum of 2 GB of 667 MHz, Fully Buffered DIMMs (FBD),upgradable to a maximum of 128 GB by installing combinations of512-MB, 1-GB, 2-GB, or 4-GB memory modules in the four memory risers.• Support for up to five 3.5-inch, internal hot-pluggable SAS(Serial Attached SCSI) hard drives or support for up to eight 2.5-inch,internal hot-pluggable SAS hard drives.• One slimline IDE DVD-ROM/CD-RW drive or slimline SATADVD-ROM/CD-RW drive (when available).• Two hot-pluggable power supplies in a 1 + 1 redundant configuration.• Four fan modules, each comprised of two dual-rotor fans, for a totalof eight cooling fans.• Three x4 and four x8 PCI-Express expansion slots.• I/O Riser card providing four Gigabit Ethernet NICs, capable ofsupporting 10-Mbps, 100-Mbps, and 1000-Mbps data rates.• Dedicated PCI slot for an integrated RAID controller card with 256 MBof cache memory and a RAID battery.NOTE: System boot is not supported from an external device attached toa SAS or SCSI adapter, including SAS 5/E, PERC 5/E. See support.dell.comfor the latest support information about booting from external devices.