Installation guide

B-2 DSSI Concepts
B.1 DSSI Basics
Table B-1 summarizes DSSI terminology and concepts. The indi-
cated references provide more information.
• VAX 10000 systems support DSSI subsystems in single-, dual-, tri-, or
quad-host configurations using the KFMSA-BA adapter.
• Each KFMSA-BA adapter has two buses, each of which can attach
seven additional nodes (ISEs or another KFMSA-BA adapter).
• ISEs can be RF disk or TF tape drives.
• RF ISEs are housed in disk PIUs in the system or expander cabinets.
• TF85 ISEs are housed in the system cabinet.
Table B-1 DSSI Concepts
Term Reference Definition
Control
panel
DSSI
VAXcluster
Installation
Guide
An enclosure interface that allows re-
mote control of DSSI node ID selection
and ISE operating status.
DSSI
DSSI
VAXcluster
Installation
Guide
Digital Storage System Interconnect. A
DSA-based storage interconnect used by
the KFMSA-BA adapter and the RF and
TF series integrated storage elements to
transfer data and to communicate with
each other.
Dual-host
Section B.3 Storage configuration where ISEs are
shared between two DSSI adapters on a
DSSI subsystem with two host systems.
ISE
Section B.2 Integrated storage element. On the
DSSI storage bus, all RF and TF storage
devices are ISEs.