Physical Disk Avg. Disk sec/Write Monitor

Operational States

Name State Description
Physical Disk Avg. Disk sec/Write Monitor is under Threshold Success Physical Disk Avg. Disk sec/Write Monitor is under Threshold
Physical Disk Avg. Disk sec/Write Monitor is over Threshold Error Physical Disk Avg. Disk sec/Write Monitor is over Threshold

Overridable Parameters

Parameter Name Default Value Description Override
Interval 300 The interval of monitor
SyncTime   The sync time of monitor
Threshold 50 The threshold of monitor
Number of Samples 5 The number of samples for the monitor to trigger

Alert Details

Monitor State Message Priority Severity Auto Resolution
Physical Disk Avg. Disk sec/Write Monitor is over Threshold (Error) Average Disk Sec/Write is too high Medium Critical Yes

Run As Profiles

Name
Default

Monitor Knowledgebase

Summary

This monitor checks the Physical Disk Average Write Time. If you receive an alert from this monitor, action can be required in order to bring the system back to an operational state.

Physical Disk Average Write shows the time, in seconds, of the average disk write. A disk that is developing a bottleneck might cause the entire system to slow.

Causes

An unhealthy state indicates that the physical disk average disk write rate is currently high.

Circumstances that may cause this condition:

  • Logic board or controller related problems.

  • The hard drive interface speed can form a bottleneck to overall performance if it is too low for the hard disk's maximum sustained transfer rate.

  • When available memory is low, the Virtual Memory Manager writes more pages to swap, resulting in increased disk activity.

Resolutions
  • Upgrade or replace existing drive controllers with faster models.

  • Confirm system has the maximum speed hard drive that it can support.

  • Install separate drives on individual controller cards, spreading the read/write activities across multiple controllers, to increase overall performance.

  • Be sure to set this threshold value appropriately for your specific storage hardware. The threshold value will vary according to the disk’s underlying storage subsystem. For example, the “disk” might be a single spindle or a large disk array. You can use Operations Manager overrides to define exception thresholds, which can be applied to specific computers or entire computer groups.

External References
This monitor does not contain any external references.

See Also for System Center Operations Manager 2007 R2 Cross Platform - RHEL Management Pack


Downloads for System Center Operations Manager 2007 R2 Cross Platform - RHEL Management Pack

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