Download VAX 4000 (Model 300) Technical Information Guide

2.2 Mass Storage Options
The VAX 4000 Model 300 system supports the following mass storage
devices:
•
Internal to the BA440 enclosure:
TK-series tape drive
TF-series tape drive
TLZ-series tape
RF-series integrated storage element (ISE)
•
External to the BA440 enclosure:
RRD-series compact disk subsystem (tabletop)
TU81–Plus tape
TSV-series tape
TLZ-series tape
RA-series disks
Four RA-series drives are supported by one KDA50 controller. The system
supports up to eight RF-series drives with embedded and/or KFQSA
controllers. You can put only two disk controllers in the Q-bus backplane,
two KDA50s, two KFQSAs, or one of each.
Up to four RF-series ISEs can be installed in your system.
The
CPU communicates with the ISEs through a Digital Storage Systems
Interconnect (DSSI) adapter, which is built into the CPU. Your VAX 4000
system has two DSSI adapters, and hence, two separate DSSI busses. Each
DSSI bus is capable of supporting seven integrated storage elements.
Option Specifications
2–3