Dell POWEREDGE 2950 - Manual (Page 76)

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Installing System Components
Configuring the Boot Device
NOTE:
System boot is not supported from an external device attached to a SAS or SCSI adapter. See
support.dell.com for the latest support information about booting from external devices.
If you plan to boot the system from a hard drive, the drive must be attached to the primary (or boot)
controller. The device that the system boots from is determined by the boot order specified in the System
Setup program.
The System Setup program provides options that the system uses to scan for installed boot devices. See
"Using the System Setup Program" on page 37 for information about the System Setup program.
Expansion Cards
The system is available with either a PCI-X or a PCI Express (PCIe) left riser board option. The PCI-X left
riser board provides two PCI-X 64-bit/133-MHz expansion slots, while the PCIe left riser board provides one
PCIe x8-lane expansion slot and one PCIe x4-lane expansion slot. The half-height center riser board
provided with both PCI-X and PCIe left riser board options features one PCIe x8-lane expansion slot. The
three expansion card slots are on separate buses.
Expansion Card Installation Guidelines
To identify expansion slots, see "Expansion-Card Riser-Board Components and PCI Buses" on page 142.
NOTE:
The expansion-card slots are not hot-pluggable.
NOTE:
Although the PCIe x4-lane expansion slot on the PCIe left riser option is physically a PCIe x8 connector, it
functions only as a PCIe x4-lane slot.
NOTE:
Slot 1 on the central riser supports half-length expansion cards only. Slots 2 and 3 on the left riser support
full-length expansion cards.
NOTE:
Your system supports up to two RAID expansion cards to manage external storage.
Installing an Expansion Card
CAUTION:
Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
NOTE:
The procedure for installing expansion cards into the left and central risers is the same except that there is
no card guide for cards installing into the central riser, and only half-height cards are supported on the central
riser. Full-length expansion card installation is illustrated in Figure 3-18.
1 Unpack the expansion card and prepare it for installation.
For instructions, see the documentation accompanying the card.
2 Turn off the system, including any attached peripherals, and disconnect the system from the electrical
outlet.
3 Open the system. See "Opening the System" on page 54.
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