Installation guide

C.2 Conversion Procedure
Figure C–6 Possible Dual-Host Bus Configurations
SYS
A
108-inch
BC21Q-09
70-inch
SF200 I/O
PORT
Magazine
Subsystem
Storage
Enclosure
Tape
SYS
A
SF200 I/O
PORT
Magazine
Subsystem
Tape
SYS
A
SF200 I/O
PORT
T
T
D D
SF72
108-inch
BC21Q-09
108-inch
BC21Q-09
70-inch
70-inch
42-inch
BC21Q-3F
BC21R-5L
BC21R-5L
BC21R-5L
D D
SF200 I/O
PORT
70-inch
SYS
BC21R-5L
108-inch
BC21Q-09
70-inch
BC21R-5L
SF200 I/O
PORT
SYS
108-inch
BC21Q-09
70-inch
BC21R-5L
SF200 I/O
PORT
SYS
108-inch
BC21Q-09
B
B
B
Storage
Enclosure
SF72
D D
D D
SHR-X0168A-90
D1
D2
D3
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 Sx300 storage array front or rear doors.
2
Remove and discard the 42-inch DSSI cables between Sx72 storage enclosures only. Remember
that Sx72 storage enclosures in positions 3 and 5 must be converted from split-bus to through-bus
mode and become a D3 configuration only.
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 Sx72 storage enclosures.
C–10 Converting a Single-Host Configuration to a Dual-Host Configuration