HP Array Controller HSG V8.7 Software - Manual (Page 51)

General Description 1–27
Failed Less
than
50%
charged Data loss: No
Cache policy: Both controllers
support write-through caching
only.
Failover: In transparent failover,
all units failover to controller B
and operate normally.
In multiple-bus failover with host-
assist, only those units that use
write-back caching, such as
RAIDsets and mirrorsets, failover
to controller B.
In single configurations, the
controller only provides write-
through caching to its units.
Data loss: No
Cache policy: Both controllers
support write-through caching only.
Failover: No
Failed Failed Data loss: No
Cache policy: Both controllers
support write-through caching
only.
Failover: No. RAIDsets and
mirrorsets become inoperative.
Other units that use write-back
caching operate with write-
through caching only.
Data loss: No
Cache policy: Both controllers
support write-through caching only.
Failover: No. RAIDsets and
mirrorsets become inoperative.
Other units that use write-back
caching operate with write-through
caching only.
Table 1-8 Cache Policies Resulting and ECB Status (Continued)
Cache Module Status Cache Policy
Cache A Cache B Unmirrored Cache Mirrored Cache