Scsi Drives - IBM Netfinity 4500R User Reference Manual

Note: The illustrations in this document might differ slightly from your hardware.
CD-ROM drive
Empty 5.25-inch bays
• Your server comes with one 3.5-inch, 1.44 MB diskette drive and one IDE CD-
ROM drive.
• The empty bays below the diskette drive come without a device installed. You
can use these bays for 5.25-inch, half-high, removable-media drives, such as tape
backup drives. You also can combine these bays into a single, full-high bay and
install a digital linear tape (DLT) drive; or, you can install a Netfinity Media Bay
Ultra160 Hot Swap Conversion Kit option, which converts these bays to three
hot-swap drive bays.
• The Netfinity 4500R server supports only one diskette drive.
• If you are installing a device with a 50-pin connector in either of the 5.25-inch
bays, you need a 68-pin to 50-pin converter.
• Your server supports three slim-high (1-inch) hot-swap hard disk drives in the
hot-swap bays. If your server has the Netfinity Media Bay Ultra160 Hot Swap
Conversion Kit option installed, it supports three additional hot-swap hard disk
drives.
• The hot-swap bays connect to a SCSI backplane. This backplane is a printed
circuit board behind the bay.
Note: The server's EMI integrity and cooling are both protected by having the 5.25-
inch bays covered or occupied. When you install a drive, save the filler panel
from the bay, in case you later remove the drive and do not replace it with
another.

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 92, in addition to the
instructions in this section.
A 16-bit (wide) SCSI cable connects the SCSI hard-disk drive backplane to an
integrated SCSI controller on the system board. An additional 16-bit 1-drop SCSI cable
is shipped inside your server. It is folded and restrained with a cable clamp on the
bottom of the server chassis near the empty bays. You can use this cable to connect an
optional SCSI device installed in one of the empty 5.25-inch bays to the SCSI channel
A connector on the system board.
Diskette drive
Hot-swap bay Hot-swap bay
(SCSI ID 0) (SCSI ID 1)
Installing internal drives
Hot-swap bay
(SCSI ID 2)
Chapter 6. Installing Options
77