Installation guide

Installing the Magazine Tape Subsystem in an SF200 Storage Array 6–35
6.2.2 Dual-Host Configuration
Use the following sections for cabling a magazine tape subsystem in an
existing SF200 storage array configured for dual-host.
6.2.2.1 Cabling Position 5
WARNING
Before performing the following steps, refer to the system
documentation for the correct steps to perform an orderly
shutdown of the system that the SF200 storage array is connected
to.
1. Take the disk ISEs in position 1 off-line before you proceed. To do
so first take each ISE off-line by pressing the Ready switches. Then
press all the drive dc power switches to the out position. Last, turn
off the ac power at the rear of the storage enclosure.
CAUTION
Use care not to disturb or damage power cords and DSSI
cables that are already connected to the DSSI I/O panel.
2. Pull the inner assembly of the magazine tape subsystem out to the
head-cleaning position (first mechanical stop).
3. Disconnect the 70-inch DSSI cable (part number BC21R–5L)
connected to the rightmost DSSI connector at the rear of the SF72
enclosure in position 1.
4. Connect the 70-inch DSSI cable removed from the SF72 storage
enclosure to the the top DSSI connector on the rear of the magazine
tape subsystem.
5. Route this DSSI cable under the cable retainers on the right side of
the cabinet.
6. Connect a 42-inch DSSI cable (part number BC21Q–3F) to the
rightmost DSSI connector at the rear of the SF72 in position 1 to the
bottom DSSI connector at the rear of the magazine tape subsystem in
position 5. Refer to Figure 6–14.
7. Route this DSSI cable under the cable retainers on the right side of
the cabinet.