Dell 341-7212 User Guide - Page 37

Changing Virtual Disk Properties

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NOTE: Dell recommends that you leave the adjustable task rates at their default settings, in order to achieve the best system performance. If you raise the task rates above the defaults, foreground tasks will run more slowly and it might seem that the system is not responding. If you lower the task rates below the defaults, rebuilds and other background tasks might run very slowly and might not complete within a reasonable time. If you decide to change the values, record the original default value here so you can restore them later, if necessary: Rebuild Rate Patrol Rate Background Initialization Rate Check Consistency Rate Reconstruction Rate 1 Select the Physical View tab in the left panel of the Dell SAS RAID Storage Manager window and select a controller icon. 2 In the right panel of the Dell SAS RAID Storage Manager window, select the Operations tab and select Set Adjustable Task Rates. The default task rates appear in the right panel. 3 Enter changes, as needed, to the task rates for Rebuild Rate, Patrol Rate (for patrol reads), Background Initialization (BGI) Rate (for fast initialization), Check Consistency Rate (for consistency checks), and Reconstruction Rate. Each task rate can be set from 0 to 100. The higher the number, the faster the activity will run in the background, possibly impacting other system tasks. NOTE: Patrol read does not report on its progress while it is running. The patrol read status is reported in the Event Log only. 4 Click Go to accept the new task rates. 5 When the warning message appears, click OK to confirm that you want to change the task rates. Changing Virtual Disk Properties NOTICE: For the SAS 5/iR controller, you can enable/disable Self-Monitoring and Reporting Technology (SMART) and Write Cache Enable on physical disks are not part of a virtual disk. For the SAS 6/iR controller, support is provided for Write Cache Enable on physical disks that are not part of a virtual disk. The parameters are different from those set for the virtual disk. Configuration 37

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Configuration
37
NOTE:
Dell recommends that you leave the adjustable task rates at their default
settings, in order to achieve the best system performance. If you raise the task
rates above the defaults, foreground tasks will run more slowly and it might seem
that the system is not responding. If you lower the task rates below the defaults,
rebuilds and other background tasks might run very slowly and might not complete
within a reasonable time. If you decide to change the values, record the original
default value here so you can restore them later, if necessary:
Rebuild Rate: ___________________
Patrol Rate: ___________________
Background Initialization Rate: ___________________
Check Consistency Rate: ___________________
Reconstruction Rate: ___________________
1
Select the
Physical View
tab in the left panel of the Dell SAS RAID
Storage Manager window and select a controller icon.
2
In the right panel of the Dell SAS RAID Storage Manager window, select
the
Operations
tab and select
Set Adjustable Task Rates
.
The default task rates appear in the right panel.
3
Enter changes, as needed, to the task rates for Rebuild Rate, Patrol Rate
(for patrol reads), Background Initialization (BGI) Rate (for fast
initialization), Check Consistency Rate (for consistency checks), and
Reconstruction Rate. Each task rate can be set from 0 to 100. The higher
the number, the faster the activity will run in the background, possibly
impacting other system tasks.
NOTE:
Patrol read does not report on its progress while it is running. The
patrol read status is reported in the Event Log only.
4
Click
Go
to accept the new task rates.
5
When the warning message appears, click
OK
to confirm that you want to
change the task rates.
Changing Virtual Disk Properties
NOTICE:
For the SAS 5/iR controller, you can enable/disable Self-Monitoring and
Reporting Technology (SMART) and Write Cache Enable on physical disks are not
part of a virtual disk. For the SAS 6/iR controller, support is provided for Write
Cache Enable on physical disks that are not part of a virtual disk. The parameters
are different from those set for the virtual disk.