Virtual Disks

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Parameters

Name

Description

Units

Default Alert Conditions

Cache Hit Ratio

Percentage of requests that are successfully served by a cache.

Percent (%)

None

Cache Read Byte Rate

Amount of data read off the cache.

Megabytes per seconds (MB/s)

None

Cache Read Response Time

Average time taken to complete read operations that are served by the cache.

Milliseconds (ms)

None

Disk Read Byte Rate

Amount of data read off the disk.

Megabytes per seconds (MB/s)

None

Disk Read Request Rate

Amount of read requests processed by the disk.

Requests/s

None

Flush Byte Rate

Amount of data eventually written to the disk.

Megabytes per seconds (MB/s)

None

Mirror Byte Rate

Mirroring traffic.

Megabytes per seconds (MB/s)

None

Prefetch Byte Rate

Amount of data that is proactively loaded into the cache.

Megabytes/seconds (MB/s)

None

Read Bytes

Cumulative count of read bytes.

Gigabytes (GB)

None

Time Since Last Activity

Number of days since any activity occurred on the disk.

Days

None

Total Read Byte Rate*

Total amount of data read from the disk (Cache Read Byte Rate + Disk Read Byte Rate).

Megabytes per seconds (MB/s)

None

Write Byte Rate

Amount of data written to the disk.

Megabytes per seconds (MB/s)

None

Write Bytes*

Cumulative count of write bytes.

Gigabytes (GB)

None

Write Request Rate

Amount of write request processed by the disk.

Requests/seconds (Requests/s)

None

Write Response Time

Average time taken to complete write requests.

Milliseconds (ms)

None

* Parameters marked with an asterisk are used by default when visualizing the corresponding monitor instance in BPPM