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Monitoring Hard Disk Drives; Examples Of Usage Statistics Displayed In The List - HP XP20000 User Manual

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Paths between adapters and cache switches:
Paths between adapters and shared memories:
Paths between cache switches and cache memory:
Figure 29 Examples of Usage Statistics Displayed in the List
.
: When the green checkmark icon
lustrates changes in usage rate for the access path.
Adapter: This column indicates adapters.
CSW: This column indicates cache switches.
SM: This column indicates shared memories.
Cache: This column indicates the cache memories.
Usage:
The Ave. (Total) column displays the average usage rate for the specified period.
The Max. column displays the maximum usage rate for the specified period.

Monitoring Hard Disk Drives

The Auto LUN window provides the LDEV tab where you can check workloads on physical hard disk
drives (parity groups) or on volumes. The LDEV tab shows the I/O rate and the transfer rate. The I/O
rate indicates the number of disk I/Os per second. The transfer rate indicates the size of data transferred
to the disk in one second.
76
Performance Monitor Operations
is displayed on the left of the access path, the graph il-

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