Installation guide

Converting a Single-Host Configuration to a Dual-Host Configuration C–11
The steps in the following section instruct you on how to physically
recable the SF200 storage array from its current single-host configuration
to a daul-host configuration.
Use Table C–2 to convert the existing SF200 storage array from single-
host configured DSSI buses to the dual-host configuration and to
Figure C–3 and Figure C–4 for the actual bus configuration.
CAUTION
Do not disturb any existing DSSI cables unless otherwise
instructed.
Do not remove any existing 42-inch DSSI cables (BC21Q–3F)
between magazine tape subsystems and SF72 storage enclosures)
Table C–2 Single-Host to Dual-Host Conversion
Single-Host To Dual-Host
S1 D1
2
S2
1
D1
S3
1
D2
S4 D3
2
S5
1
D3
1
When converting these buses remove the DSSI terminator (12–31281–01) and store these
terminators in the ESD pouches on the inside SF200 storage array front or rear doors.
2
Remove and discard the 42-inch DSSI cables between SF72 storage enclosures only.
Remember that SF72 storage enclosures in positions 3 and 8 MUST be converted from
split-bus to through-bus mode and become a D3 configuration only.