In addition, a KFDDB native dual DSSI adapter or two KFQSA DSSI adapters
can be added to the system, in the Q–bus card cage, for a potential maximum of
six separate DSSI buses.
Each DSSI adapter is one node on a DSSI bus. A single DSSI bus can support up
to eight nodes consisting of one adapter and seven DSSI devices. Each node on a
DSSI bus must have a unique DSSI node ID, numbered from 0 to 7.
Table 1–1 Maximum DSSI Devices Supported Per Configuration
If you have this number
of CPU-native adapters
And this
number
of KFQSA
adapters
You will
have this
number
of DSSI
buses
For this
maximum
number of
DSSI nodes
(8 per bus)
For this
maximum
number of
DSSI devices
(7 per bus)
2
0
2
16
14
2
1
3
24
21
2
2
4
32
28
4 (w/daughter board)
0
4
32
28
4 (w/daughter board)
1
5
40
35
4 (w/daughter board)
2
6
48
42
1.2.2.2 Mass Storage Subsystems
Optional mass storage subsystems are available for your system. They include
the:
InfoServer subsystem
DSSI storage arrays (R400X, SF12)
RRD43 compact disc subsystem
RV20 optical disk subsystem
TF-series, TSZ07, TS05, and TU81 tape drives
SA600 storage array (with up to eight RA90 disk drives)
If your system includes an optional mass storage subsystem, refer to the user’s
guide or owner’s manual for that subsystem for instructions on how to operate
the device.
System Overview 1–23
