Siemens Network Hardware SM2 monitoring system 用户手册
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U3585-J-Z125-8-76
SYMMETRIX CONTROLLER report
SM2 reports
WR HIT
Percentage of write operations that did not need to be delayed (see
notes)
notes)
TOT HIT
Percentage of read and write operations completed by the cache in
relation to the total number of access operations executed
relation to the total number of access operations executed
Notes
The monitored data output here refers to the controller as a whole, i.e. it includes access
operations from other hosts.
operations from other hosts.
WR HIT:
All write operations are executed via the cache as fast writes. An exception are delayed
fast writes: if the cache is filled with unsaved write data, these may be forced to wait
temporarily for a cache slot to become available. A WR HIT is one write operation that
need not be delayed. Only very high write loads will cause the WR HIT rate to fall below
100%.
All write operations are executed via the cache as fast writes. An exception are delayed
fast writes: if the cache is filled with unsaved write data, these may be forced to wait
temporarily for a cache slot to become available. A WR HIT is one write operation that
need not be delayed. Only very high write loads will cause the WR HIT rate to fall below
100%.