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When installing a hard disk in a hard
disk box (optional)
Installing a hard disk
A hard disk with a capacity of 2G, 4G or 9G can be
installed in a hard disk box. For details on how to install
a hard disk in a hard disk box, refer to the "Hard Disk Box
AY-EB500 Instruction Manual."
Connecting the hard disk
A special SCSI cable (sold separately) is required in
order to connect the SCSI board with the hard disk box.
When connecting just one hard disk box
Connect the SCSI board to the SCSI IN connector on the
hard disk box. Connect channel A on the SCSI board to
channel A on the hard disk box, and connect channel B
on the SCSI board to channel B on the hard disk box.
For details on how to set the SCSI IDs and the termina-
tion, refer to the "Hard Disk Box AY-EB500 Instruction
Manual.
23
When connecting two or more hard disk boxes
When connecting two or more hard disk boxes,
AY-CA68SR3 SCSI cables (sold separately) are needed.
Connect the SCSI OUT connector on the first hard disk
box to the SCSI IN connector on the second hard disk
box. When doing so, connect the channel A on the first
hard disk box to channel A on the second hard disk box,
and connect channel B on the first hard disk box to chan-
nel B on the second hard disk box. Connect a third and
subsequent hard disk boxes in the same manner. (Refer
to the diagram below.)
Don't fail to set the terminator only on the hard disk box
that is at the farthest end of the chain from the SCSI
board. Set the SCSI IDs for each hard disk box so that
each box has a unique ID. For details on how to set the
SCSI IDs and the termination, refer to the "Hard Disk Box
AY-EB500 Instruction Manual.
No. 1
chA
chB
SCSI ID
3 2 1 0 3 2 1 0
ON
ON
1 2 3 4
1
2 3 4
chA
I N
OUT
I N
Number of hard disks that can be
connected
When hard disk is housed in personal computer
Three optional hard disk boxes (two hard disks per box)
and two internal hard disks, totalling eight.
When all hard disks are housed in optional hard disk box
Five optional hard disk boxes (two hard disks per box),
totalling ten.
No. 2
Hard disk box
chA
chB
SCSI ID
3 2 1 0 3 2 1 0
ON
ON
1 2 3 4
1
2 3 4
chB
chA
chB
~AC IN
~AC IN
OUT
I N
OUT
I N
OUT
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