Installation guide

Glossary–2
DSSI
Digital Storage System Interconnect. A DSA-based storage interconnect
used by the KFMSA adapter and the RF- and TF-series integrated storage
elements to transfer data and to communicate with each other.
DUAL-HOST
Storage configuration where DSSI ISEs are shared between two DSSI
adapters and host systems.
DUP
Diagnostic and utility protocol. A SYSAP-level protocol by which a host
computer directs a storage device controller to run internal diagnostics or
utility functions. DUP is implemented as a class driver on the host side,
and a corresponding class server on the storage controller side.
EEPROM
Electrically erasable programmable read only memory. Used by the
KFMSA adapter to store configuration, manufacturing, and error
information in a nonvolatile location.
FCT
Factory control tables. Where factory found bad blocks are recorded.
ISE
Integrated storage element. All DSSI storage devices are ISEs.
KFMSA
XMI bus to DSSI bus adapter.
LBN
Logical block number. A logical block number is a volume-relative address
of a block on a mass storage device. A block is a physical sector on the
storage media that can contain customer data.
LTN
Logical track number. The actual data track in the customer data area.
MAGAZINE TAPE SUBSYSTEM
A DSSI tape ISE with tape loader.
MSCP
Mass Storage Control Protocol. An application layer protocol used by the
host to perform disk I/O operations and I/O control functions.