IBM 8649 - Eserver xSeries 225, Maintenance And Troubleshooting Manual

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Notes:
1. To minimize the possibility of damage to the hard disk drives when you are
installing a hard disk drive in a rack model, install the server in the rack before
installing the hard disk drives.
2. You do not have to turn off the server to install hot-swap drives in the hot-swap
drive bays. However, you must turn off the server when performing any steps
that involve installing or removing cables.
Working with hot-swap drives
The hot-swap drives are attached to a hot-swap hard disk drive backplane . The
backplane is a printed circuit board behind the drive bays. For more information
about drive bays and drive installation, see “Installing internal drives” on page 44.
The low voltage differential (LVD) SCSI hot-swap hard disk drive backplane
supports a maximum of six slim-high, hot-swap hard disk drives.
Each hot-swap drive that you plan to install must be mounted in a hot-swap-drive
tray. The drive must have a Single Connector Attachment (SCA) connector.
Hot-swap-drive trays come with hot-swap drives.
Each hot-swap drive has two indicator LEDs (see the User’s Guide on the IBM
xSeries Documentation CD). If the amber hard disk drive status LED for a drive is lit
continuously, that drive is faulty and requires replacement. When the hard disk drive
status LED indicates a drive fault, you can replace the drive without turning off the
server.
For increased security, the hot-swap drives and filler panels are locked in the server
by the hot-swap lock bar. The hot-swap lock bar cannot be released, allowing
installation and removal of the hot-swap drives and filler panels, unless the key lock
on the server side cover is unlocked.
Note: All drives being used in the server should have the same speed rating:
mixing speed ratings will cause all drives to operate at the lower speed.
The hard disk drives that are connected to the standard backplane are attached to
channel A.
Notes:
1. Table 5 on page 48 lists the SCSI identifiers (IDs) for the standard LVD SCSI
backplane and hard disk drives.
2. Cable identifiers are printed on the cables that come with your server and
options. Use these identifiers to connect the cables to the correct connectors.
3. For additional information about cabling, see “Cabling an optional SCSI adapter”
on page 43 and “System-board option connectors” on page 91
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IBM xSeries 225 Types 8649: Hardware Maintenance Manual and Troubleshooting Guide