Average Physical Disk Seconds Per Transfer Monitor

  • ID:  Microsoft.Windows.Server.2008.PhysicalDisk.AvgDiskSecPerTransfer
  • Description:  Monitors the Physical Disk read and write latency (average disk seconds per transfer).
  • Target:  Windows Server 2008 Physical Disk
  • Enabled:  Yes

Operational States

Name State Description
Average Physical Disk Seconds Per Transfer High Warning Average Physical Disk Seconds Per Transfer High
Average Physical Disk Seconds Per Transfer OK Success Average Physical Disk Seconds Per Transfer OK

Overridable Parameters

Parameter Name Default Value Description Override
Frequency 60  
Threshold 0.04  

Alert Details

Monitor State Message Priority Severity Auto Resolution
Average Physical Disk Seconds Per Transfer High (Warning) Physical disk transfer (reads and writes) latency is too high Medium Warning Yes

Run As Profiles

Name
Default

Monitor Knowledgebase

Summary

The Avg. Disk sec/Transfer (PhysicalDisk\Avg. Disk sec/Transfer) for the physical disk has exceeded the threshold. The physical disk and possibly even overall system performance may significantly diminish which will result in poor operating system and application performance.

The Avg. Disk sec/Transfer counter measures the average time of data reads and writes on the disk.

The Avg. Disk sec/ Transfer counter is made up from both read and write disk Transfer requests. To view recent disk average rate of read and write Transfer requests you can use the following views:

Physical Disk\Avg. Disk Sec/Reads Performance View

Physical Disk\Avg. Disk Sec/Writes Performance View

Causes

A high Avg. Disk sec/Transfer performance counter value may occur due to a burst of disk transfer requests by either an operating system or application.

Resolutions

To view recent history for the Physical Disk\Avg. Disk sec/Transfers performance counter you can use the following view:

Start Physical Disk Performance View

To increase the available storage subsystem throughput for this physical disk, do one or more of the following:

  • Upgrade the controllers or disk drives.

  • Switch from RAID-5 to RAID-0+1.

  • Increase the number of actual spindles.

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 MOM 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 Windows Server Operating System Management Pack


Downloads for Windows Server Operating System Management Pack

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