D. Glossary - Hitachi XP P9500 User Manual

D. Glossary

This glossary explains the terms used in this manual.
automatic failback
A function for checking the status of paths at regular intervals, and automatically
placing the status of a path recovered from an error into the Online status.
If a path with an
automatic failback will place the path
Automatic failbacks check the status of paths that were placed in the
status because of an error, but do not check the status of paths that were
Online(E)
placed in the
offline operations, see 6.4 offline (Places Paths Offline).
AutoPATH_ID
An ID that HDLM assigns to a path during the system startup. Every path has a unique
AutoPATH_ID.
(See also: path)
boot disk environment
An environment in which the startup disk is in a storage system instead of in the host.
CHA (Channel Adapter)
An adapter for controlling the channels of a storage system.
CLPR(Cache Logical Partition)
A function supported by the Hitachi USP, Universal Storage Platform V/VM, Virtual
Storage Platform, and Hitachi AMS2000/AMS/WMS/SMS series for logically
splitting up a cache. This function can split up a cache into parity groups in the storage
system, so that other parity groups do not affect the cache performance.
cluster
A system of connecting multiple hosts with the same OS or platform (essentially, an
environment in which the same application can run) and treating them as one system.
or
Offline(E) Online(E)
status by executing an offline operation. For details on
Offline(C)
A
status recovers from an error, an
.
Online
B
C
D. Glossary
or
Offline(E)
707