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Installing System Components 53
The system board holds the system's control circuitry and other electronic components. Several hardware
options, such as the microprocessors and memory, are installed directly on the system board. The expansion-
card cage containing the left riser accommodates up to two full-length PCIe or PCI-X expansion cards, while
the central riser accommodates one half-length PCIe expansion card.
The system provides space for an optional optical drive. The optical drive connects to the controllers on the
system board through the sideplane board. For more information, see "Optical Drive" on page 81.
Depending on the hard drive configuration you ordered, an optional 3.5-inch diskette drive, and an
optional tape drive may also be available for installation into a media bay. See Table 3-1 for configuration
options.
Table 3-1. Hard Drive and Media Bay Configurations
The hard-drive bays provide space for up to eight 2.5-inch SAS drives or six 3.5-inch SAS or SATA hard
drives. The hard drives connect to a RAID controller card through the SAS backplane board. For more
information, see "Hard Drives" on page 55 and "SAS Controller Daughter Card" on page 69.
During an installation or troubleshooting procedure, you may be required to change a jumper setting. For
more information, see "System Board Jumpers" on page 135.
Front Bezel
A lock on the bezel restricts access to the power button, diskette drive, optical drive, and hard drive(s). A
control panel LCD located on the front panel and accessible through the front bezel displays the system’s
status.
Removing the Front Bezel
1
Using the system key, unlock the bezel.
2
Press the tab at the left end of the bezel.
3
Rotate the left end of the bezel away from the system to release the right end of the bezel.
4
Pull the bezel away from the system. See Figure 3-2.
Number of Hard Drives on Backplane Hard-Drive Size Media Bay
63.5-inchNo
4 3.5-inch Yes
8 2.5-inch Yes
Book.book Page 53 Friday, February 3, 2006 11:09 AM