NetApp

Flash Accel metrics
Flash Accel collects metrics so that you can view system performance. You must enable performance statistics on each VM and disk that you want to monitor.
The following metrics are collected:
The hit rate number shows the percentage of requests that were returned from the cache instead of having to access the information on the storage system over the network. After the cache has "warmed," the cache hit rate should be relatively high and level off to a steady state. If the cache hit rate drops significantly, there may be an issue that needs to be addressed.
The insertion rate typically starts out very high as the cache is populated. After the cache has been fully warmed (when the cache has been used for awhile), the insertion rate should then be fairly low because most read requests are serviced from cache (appearing in the hit rate at that point).
Parent Topic: Viewing Flash Accel performance statistics


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