Monitoring the Nytro Cache Performance

> Monitoring the Nytro Cache Performance

> The Nytro Cache performance monitoring feature enables you to view and monitor the I/O statistics and firmware caching activity. The I/O cache performance indicators include the performance indicators, such as total read I/Os, read hits, read miss, total write I/Os, write hits, write miss and so on. This feature lets you collect the following information:

> | Cache capacity – The size of cache available for caching.

> | Cache utilization – The percentage of the free and in use cache size.

> | Host I/O count – The number of host reads and writes.

> | Hit rate – The percentage of I/Os completed from cache.

> | Average I/O bandwidth – The number of bytes, MBs, and GBs written into the VD and read from the VD.

> | Average host I/O latency – The average time taken to complete an I/O request.

> | Hit count – The number of I/Os completed from cache.

> | Miss count – The number of I/Os that were not found on cache and retrieved from the disk.

> | Other cache statistics – The number of total cache windows, dirty, and non-dirty cache windows.

> | Host I/Os – The number of I/Os completed by firmware and I/Os coming from host.

> | Disk I/Os – The number of I/Os completed by firmware and directed to disk.

> | VD statistics – Information per VD.

DB15-000988-08-December 2013
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