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IBM-AUSTRIA - PC-HW-Support 30 Aug 1999 |
SCSI Drives (Netfinity 7000 - 8651)
SCSI Drives
Some drives have a special design called small computer
system intertace, or SCSI. This design allows you to
attach multiple drives to a single SCSI connector.
NOTE: Any information about SCSI drives also applies to
other SCSI devices, such as scanners and printers.
A 16-bit (wide) SCSI cable connects each hot-swap
backplane to an integrated SCSI controller on the system
board. An additional 16-bit 4-drop SCSI cable is shipped
(disconnected) in the bottom of the server between the
open bays and the power supply area. It is folded and
restrained with a cable clamp.
If you want to install SCSI devices in the left front bays,
you can do one of following:
- Use one of the SCSI controllers on the system board
to control the SCSI devices in the left front bays. In
order to do this, you will need to disconnect the SCSI
cable that controls one of the backplanes and install
the additional 4-drop SCSI cable that is shipped
(disconnected) inside the server. If you disconnect
the SCSI cable from the backplane, you cannot install
hot-swap drives in any of the bays supported by that
backplane and, thus, can have a maximum of six
hot-swap drives installed in the server. The 4-drop
SCSI cable can then be used to support the SCSI
devices in the left front bays.
- Attach the 4-drop SCSI cable to one of the SCSI
controllers on the system board and use that
controller to control the SCSI devices in the left front
bays. Install an optional SCSI adapter and use the
SCSI controller on the adapter to control one of the
SCSI hot-swap backplanes.
NOTE: For ease of cabling, if you install an optional
SCSI adapter to control a SCSI hot-swap
backplane, install it in PCI slot 1. Refer to
'Cabling Example for the ServeRAID Adapter' for more information.
- Install optional repeater adapters on the backplanes
and daisy chain the backplanes, so they can be
controlled by one of the SCSI controllers on the
system board. You can then install the extra 4-drop
SCSI cable and use the other SCSI controller on the
system board to support the SCSI devices in the left
front bays.
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