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Chapter 4 Installing Mass Storage Devices
43
Cabling Configurations
There are various SCSI cable configurations associated with the HP NetServer
and if all possible SCSI devices and connections are used, then an additional SCSI
disk controller is required. Table 4-1 describes the various cables and where each
one can be connected. The example configurations shown in Figures 4-6 and 4-7
assume the maximum number of SCSI devices and connections.
Do not connect the SCSI terminated cable (# 3) to the Hot Swap Mass
Storage Cage’s connector A or B, or unreliable operation will occur.
The Hot Swap Mass Storage Cage can have up to six drives with only one
SCSI cable connected.
The Hot Swap Mass Storage Cage can also be split into two equal parts,
with up to three drives each (requires duplex board accessory kit), and uses
two independent SCSI busses, which require two SCSI cables.
If the duplex board is installed, the two embedded SCSI controllers, a dual
channel SCSI disk controller board, or a DAC board must be used to
control the two halves of the Hot Swap Mass Storage Cage.
Table 4-1. Internal Cable Designations
Cable
Designation
Description Source
Cable 1
This cable always connects to the
Flexible disk drive in the system.
This cable can only connect to
the floppy connector on the
system board.
Cable 2 This cable always connects to the
Mass Storage Cage and has no
termination.
This cable is typically
connected to the embedded
SCSI A channel, a SCSI disk
controller board, or a HP
NetRAID (DAC) board.
Cable 3 This cable always connects to the
non-hot swap SCSI drives and has
a termination at the end.
This cable can be connected to
the embedded SCSI A or B
channel, but is typically
connected to SCSI Channel B.
Cable 4
This cable always connects to the
IDE devices (CD-ROM) in the
HP NetServer.
This cable can only connect to
the embedded IDE connector
on the system board.
Cable 5 This sheathed ribbon cable
(optional) is always used for the
external connector.
This cable can be connected to
an embedded SCSI channel or a
SCSI disk controller board.