IBM 86607SU Hardware Maintenance Manual - Page 206

SCSI drives, Bays A and B

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Bays A and B come without a device installed. These bays are for 5.25-inch, half-high, removable-media drives, such as tape backup drives. Bays A and B can be combined into a single full-high bay. The Netfinity 5500 supports only one diskette drive. The server does not support hard disk drives in bays A and B because of cooling considerations. Note The server's EMI integrity and cooling are both protected by having the left front bays (removable-media 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. If you are installing a device with a 50-pin connector in one of the removable-media bays (bays A-B), you need a 68-pin to 50-pin converter. 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 "External options" on page 165, in addition to the instructions in this section. A 16-bit (wide) SCSI cable connects the hot-swap backplane to one channel of the integrated RAID SCSI controller on the system board. An additional 16-bit SCSI cable with connectors for optional devices in bays A and B connects to the second channel of the RAID controller. This cable has a terminator at the other end and is folded and restrained with a cable clamp to the bottom of the server between the open bays and the power supply area. 198 Netfinity Server HMM

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±
Bays A and B come without a device installed.
These
bays are for 5.25-inch, half-high, removable-media
drives, such as tape backup drives.
Bays A and B
can be combined into a single full-high bay.
±
The Netfinity 5500 supports only one diskette drive.
±
The server does not support hard disk drives in bays
A and B because of cooling considerations.
Note
The server's EMI integrity and cooling are both
protected by having the left front bays
(removable-media 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.
±
If you are installing a device with a 50-pin connector
in one of the removable-media bays (bays A–B), you
need a 68-pin to 50-pin converter.
±
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
“External options” on page
165, in addition to the
instructions in this section.
A 16-bit (wide) SCSI cable connects the hot-swap
backplane to one channel of the integrated RAID SCSI
controller on the system board.
An additional 16-bit SCSI
cable with connectors for optional devices in bays A and B
connects to the second channel of the RAID controller.
This cable has a terminator at the other end and is folded
and restrained with a cable clamp to the bottom of the
server between the open bays and the power supply area.
198
Netfinity Server HMM