HP Surestore Disk Array 12h System Administrator's Guide for HP-UX, MPE, and W - Page 232

Windows NT, Analyzing Disk Array Performance, Canceling a Rebuild

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Using AutoRAID Manager for Windows NT Analyzing Disk Array Performance 2. Click Properties. 3. Click the Configuration tab. 4. Under Rebuild, check the rebuild progress bar for the current status of the rebuild. Canceling a Rebuild It is possible to cancel a rebuild in progress before it completes. However, you should be aware that when you restart a stopped rebuild it starts at the beginning, not at the point where it left off. This means any portion of the rebuild completed before you canceled it will have to be repeated. To cancel a rebuild: 1. Right-click the disk array currently undergoing a rebuild from the Detail pane. 2. Click Properties. 3. Click the Configuration tab. 4. Under Rebuild, click Stop. The rebuild will stop immediately. Analyzing Disk Array Performance The disk array controller monitors and stores a number of performance metrics that reflect how the disk array is performing. AutoRAID Manager periodically retrieves the metrics and stores them for viewing. AutoRAID Manager can also analyze the performance metrics to identify any potential performance problems. Based on this analysis, AutoRAID Manager will make recommendations on how to improve disk array performance. Checking the metrics regularly is a quick and easy way to monitor the performance of your disk array and identify any problems that may be developing. You may choose to display only the recommendations, or you may want to view the metrics for further analysis. For more information on performance metrics, see the "Concepts and Management" chapter in the HP SureStore E Disk Array 12H User's and Service Manual. Selecting a Time Period for Analysis When analyzing performance, you must define the time period over which the analysis will be performed. For the best results, select a time period when performance may be a concern. This will produce the most meaningful analysis and recommendations. For example, if the highest load on your disk array occurs between the hours of 8 AM and 5 PM, restrict the analysis to this time period. If periods of lower activity are included, the analysis may yield different results 232 Windows NT

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Using AutoRAID Manager for Windows NT
Analyzing Disk Array Performance
232
Windows NT
2.
Click
Properties
.
3.
Click the
Configuration
tab.
4.
Under Rebuild, check the rebuild progress bar for the current status of the rebuild.
Canceling a Rebuild
It is possible to cancel a rebuild in progress before it completes. However, you should be aware that when
you restart a stopped rebuild it starts at the beginning, not at the point where it left off. This means any
portion of the rebuild completed before you canceled it will have to be repeated.
To cancel a rebuild:
1.
Right-click the disk array currently undergoing a rebuild from the Detail pane.
2.
Click
Properties
.
3.
Click the
Configuration
tab.
4.
Under Rebuild, click
Stop
. The rebuild will stop immediately.
Analyzing Disk Array Performance
The disk array controller monitors and stores a number of performance metrics that reflect how the disk
array is performing. AutoRAID Manager periodically retrieves the metrics and stores them for viewing.
AutoRAID Manager can also analyze the performance metrics to identify any potential performance
problems. Based on this analysis, AutoRAID Manager will make recommendations on how to improve disk
array performance.
Checking the metrics regularly is a quick and easy way to monitor the performance of your disk array and
identify any problems that may be developing. You may choose to display only the recommendations, or
you may want to view the metrics for further analysis.
For more information on performance metrics, see the "Concepts and Management" chapter in the
HP
SureStore E Disk Array 12H User’s and Service Manual.
Selecting a Time Period for Analysis
When analyzing performance, you must define the time period over which the analysis will be performed.
For the best results, select a time period when performance may be a concern. This will produce the most
meaningful analysis and recommendations.
For example, if the highest load on your disk array occurs between the hours of 8
AM
and 5
PM
, restrict the
analysis to this time period. If periods of lower activity are included, the analysis may yield different results