Installation guide

Table 3–4 (Cont.): DSSI Concepts

Term Reference Deﬁnition

Node name Section 3.5.2 A 6-character (maximum) value assigned to each ISE.

The node name of each ISE must be unique across the

system topology.

OCP Section 3.5.2 Operator control panel. An enclosure interface that al-

lows remote control of DSSI node ID selection and ISE

operating status.

SF7x Section 3.4.3 A storage enclosure that houses either two or four

RF disk drives. Can be installed in a system cabi-

net or in an SF2xx storage array cabinet. Current mod-

els are SF72 and SF73.

SF2xx Section 3.4.4 DSSI storage array cabinet that houses up to

six SF7x enclosures and up to two TF857 maga-

zine tape loader subsystems.

Single-host Section 3.4.5 Storage conﬁguration where ISEs are connected to only

one host system.

Split-bus Section 3.4.3 A mode of operation where the bus servicing the ISEs

on right side of an SF7x enclosure is different bus from

the bus servicing the ISEs on the left side of the enclo-

sure.

Through-bus Section 3.4.3 A mode of operation where all the ISEs in an SF7x en-

closure are on the same DSSI bus.

Tri-host See DSSI VAXcluster Installation Guide. Three host systems shar-

ing ISEs on the DSSI storage bus. Host systems can be VAX 6000 and VAX

4000 Model 300 systems.

Connecting to a DSSI Subsystem 3–9