IBM 8671 - Eserver xSeries 235, Maintenance And Troubleshooting Manual

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15. If you have other options to install or remove, do so now; otherwise, go to
“Installing the server bezel and left-side cover (tower model)” on page 100 or
“Installing the server bezel and top cover (rack configuration)” on page 103.
Working with the 3-Pack Ultra320 Hot-Swap Expansion option
Your server contains hardware that enables you to replace a failed hard disk drive
without turning off the server. Therefore, you have the advantage of continuing to
operate your system while a hard disk drive is removed or installed. These drives
are known as 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 74. The low voltage differential (LVD) SCSI hot-swap hard
disk drive backplane supports a maximum of six slim-high, hot-swap hard disk
drives.
If you install the 3-Pack Ultra320 Hot-Swap Expansion option, you can attach up to
three additional drives. All of these drives must be LVD hard disk drives that
operate at 320 MB per second or lower. The optional 3-Pack Ultra320 Hot-Swap
Expansion Kit contains a hot-swap hard disk drive backplane that you install
adjacent to the standard hot-swap hard disk drive backplane. It also includes the
SCSI cable you need to install the option. Your server supports a maximum of two
hot-swap drive backplanes.
Note: All drives being used in the server should have the same throughput speed
rating: mixing speed ratings might cause all drives to operate at the lower
throughput speed.
Do the following to configure the channels on the two SCSI backplanes:
v
You can configure each SCSI channel (bus) independently. This is the typical
backplane configuration. In this configuration:
– The hard disk drives that are connected to the standard backplane are
attached to channel A.
– The hard disk drives that are connected to the 3-Pack Ultra320 Hot-Swap
Expansion option backplane are attached to channel B.
Notes:
1. The standard LVD SCSI backplane is also known as the SCSI backplane or the
hot-swap hard disk drive backplane.
2. The SCSI backplane that comes with the 3-Pack Ultra320 Hot-Swap Expansion
Kit is also known as the 3-Pack backplane.
3. Table 8 on page 112 lists the SCSI identifiers (IDs) for the standard LVD SCSI
backplane and hard disk drives. Table 9 on page 112 lists the SCSI IDs for the
3-Pack backplane and hard disk drives.
4. 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.
For example, the hard disk drive cables are labeled “HDD option.”
5. For information about other options and using the 3-Pack Ultra320 Hot-Swap
Expansion option, see the documentation that comes with the option kit.
6. For additional information about cabling, see “Cabling example for a ServeRAID
controller” on page 66 and “Cabling the server” on page 106.
7. The SCSI cables that come with your server can only be used with the
integrated SCSI controller with RAID capabilities. If a RAID controller other than
the ServeRAID-5i is installed, you must use SCSI cables that are compatible
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xSeries 235 Type 8671: Hardware Maintenance Manual and Troubleshooting Guide