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Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide
Cache
Board
Failure
Good Same as for DIMM failure. Data integrity: Controller A recovers all
of its write-back data from the
mirrored copy on cache B.
Cache policy: Both controllers support
write-through caching only. Controller
B cannot execute mirrored writes
because cache module A cannot
mirror controller B’s unwritten data.
Failover: No.
Table 1–8 Cache Policies and Cache Module Status (Continued)
Cache Module Status Cache Policy
Cache A Cache B Unmirrored Cache Mirrored Cache
Table 1–9 Resulting Cache Policies and ECB Status
Cache Module Status Cache Policy
Cache A Cache B Unmirrored Cache Mirrored Cache
At least
50%
charged
At least
50%
charged
Data loss: No.
Cache policy: Both controllers
continue to support write-back
caching.
Failover: No.
Data loss: No.
Cache policy: Both controllers continue
to support write-back caching.
Failover: No.