Installation guide

A VAX 6000 cabinet can have one TF tape in the system control assembly
(in the upper left front of the cabinet) and two SF7x enclosures in the base
of the system cabinet. Each SF7x enclosure houses two or four RF drives.
Total in-cabinet ISE capacity is a maximum of eight RF drives and one TF
tape drive.
SF2xx storage array cabinets can have up to six SF7x enclosures, each with
a maximum of four RF disks for a total capacity of 24 disks in each SF2xx.
An SF7x enclosure can be configured either in split-bus or through-bus
mode. Split-bus mode connects the ISEs in the right side of the SF7x
enclosure to a different DSSI bus from those on the left side. Through-bus
mode connects all the ISEs in the enclosure to the same DSSI bus.
On single- and dual-host systems, SF7x enclosures can be cabled as either
split-bus or through-bus. On multi-host systems, all SF7xs are set through-
bus (no split-bus is allowed).
FOR MORE INFORMATION
Primary reference: SF2xx Storage Array Installation Guide
Secondary reference: SF7x Storage Enclosure and SF2xx Storage Array Cabinet Ser-
vice Guide
Connecting to a DSSI Subsystem 3–15