The Disk Reads alarm is activated when the level of traffic being transmitted from this disk exceeds a threshold. Sustained high disk activity can cause an overall degradation of system responsiveness.
When this alarm is current you should look at:
If the high number of reads is causing an overall degradation of the system, consider upgrading the disk subsystem (controller and/or disks).
The Disk Writes alarm is activated when the level of traffic being transmitted to this disk exceeds a threshold. Sustained high disk activity can cause an overall degradation of system responsiveness.
When this alarm is current you should look at:
If the high number of writes is causing an overall degradation of the system, consider upgrading the disk subsystem (controller and/or disks).
This alarm becomes active when an Event Log entry is found which matches an active Event Log rule.
You can enable event logs and set event log rules. Windows Event Log Metrics
This alarm is activated when disk-based performance counters are not enabled or not updated.
Windows 2000
Not all disk-based performance counters are enabled by default on Windows 2000 systems. If this is the case, Spotlight on Windows cannot retrieve the data in these counters, and the disk activity flows (to the left of the Disks panel) are disabled for this machine.
To rectify this situation:
Go to the machine's command prompt and type:
diskperf -y
Dynamic disks and Windows 2000
Windows 2000 systems now have additional support for dynamic disks, but the disk performance counters under Windows 2000 have not been updated to report this information correctly. Because of this, Spotlight on Windows cannot retrieve the data in these counters, and the disk activity flows (to the left of the Disks panel) are disabled for this machine.
To rectify this situation:
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