IBM 866251Y - Netfinity 5500 M20, Руководство по техническому обслуживанию аппаратной части

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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 188, in addition to
these instructions.
A 16-bit (wide) SCSI cable connects the hot-swap
backplane to one channel of the integrated RAID SCSI
controller on the system board. The other channel of the
integrated RAID SCSI controller is connected to the SCSI
connector on the back of the server.
A 16-bit SCSI cable with connectors for optional devices in
bays A and B is folded and restrained with a cable clamp
to the bottom of the server between the open bays and the
power supply area. This cable has a terminator on one
end.
If you want to install a device in bay A or B, you can
either:
Ÿ
Install an additional SCSI adapter
Ÿ
Disconnect the cable from the RAID channel 1
connector on the system board (see “System board
component locations” on page 279). (This cable
goes to the external SCSI connector on the back of
the server, so you will not be able to attach external
SCSI devices using the external SCSI connector.)
Use the 16-bit SCSI cable to connect the device in
bay A or B to the RAID channel 1 connector on the
system board.
SCSI IDs:
Each SCSI device that is connected to an
individual channel of the RAID controller needs a unique
identification (ID) so that the controller can identify the
devices and ensure that different devices do not attempt to
transfer data at the same time. (The two channels of the
integrated RAID controller operate independently.) If you
need to set IDs for SCSI devices, refer to the instructions
that come with those devices.
The server automatically sets SCSI IDs for hot-swap hard
disk drives, according to the jumper settings on the SCSI
backplanes. The server uses the hard disk drive SCSI IDs
to send status information to the indicator lights above
each hot-swap bay.
The SCSI backplane in the server supports up to six
hot-swap bays. Table 11 on page 216 shows the default
SCSI IDs that the backplane assigns for hot-swap hard
disk drives.
Netfinity 5500 M20 - Type 8662
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