converter, contact your IBM reseller or IBM marketing
representative.
The server supports six slim (1-inch) or three
half-high (1.6-inch), 3.5-inch hot-swap hard disk
drives in the hot-swap bays.
The hot-swap bays connect to a SCSI
backplane.
This backplane is the printed circuit board behind the
bay. The backplane supports up to six hard disk
drives.
The diskette drive uses 1 MB and 2 MB diskettes.
For optimum use, format 1 MB diskettes to 720 KB
and format 2 MB diskettes to 1.44 MB.
SCSI drives:
Some drives have a special design
called
small computer system interface, or SCSI. This
design allows you to attach multiple drives to a single
SCSI channel.
Notes
1. Any information about SCSI drives also applies to
other SCSI devices, such as tape drives.
2. If you plan to install both internal and external
SCSI devices, you must follow the instructions in
“Connecting external options” on page 146, in
addition to the instructions in this section.
A 16-bit (wide) SCSI cable connects the SCSI HDD (hard
disk drive) backplane to an integrated LVD SCSI controller
on the system board. An additional 16-bit 2-drop SCSI
cable is shipped disconnected inside the server. It is
folded and restrained with a cable clamp to the side of the
power supply housing.
If you want to install a device in one of the non-hot-swap
bays, you can either:
Install an additional SCSI adapter and use the 2-drop
SCSI cable to attach the device to that adapter.
Install a RAID adapter as follows:
1. Disconnect the SCSI cable from the SCSI cable
extender on the system board. See the
illustration in “Installing a hot-plug PCI adapter”
on page 110 for the location of the SCSI cable
extender. (The other end of the SCSI cable is
connected to the SCSI HDD backplane.)
2. Connect the end of the SCSI cable that you
disconnected from the SCSI cable extender to
the RAID adapter. The other end of the cable is
connected to the SCSI HDD backplane; the
drives in the hot-swap bays are now connected
to the RAID adapter.
3. Connect the 2-drop SCSI cable to the SCSI
cable extender on the system board, and attach
the device in the non-hot-swap bay to one of the
drops on the other end of the 2-drop SCSI cable.
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