Compaq StorageWorks HSZ80 Configuration And Cli Reference Manual page 50

1–28 General Description
Table 1–9 Resulting Cache Policies and ECB Status (Continued)
Cache Module Status
Cache A Cache B
Failed Less than
50%
charged
Failed Failed
Unmirrored Cache
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-controller 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. RAIDsets and mirrorsets
become inoperative. Other units that
use write-back caching operate with
write-through caching only.
Cache Policy
Mirrored Cache
Data loss: No.
Cache policy: Both controllers support
write-through caching only.
Failover: No.
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.