HP 2000sa HP StorageWorks 2000 G2 Modular Smart Array reference guide (500911- - Page 44

Changing a volume's cache settings

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Changing a volume's cache settings CAUTION: • Only disable write-back caching if you fully understand how the host operating system, application, and adapter move data. If used incorrectly, you might hinder system performance. • Only change read-ahead cache settings if you fully understand how the host operating system, application, and adapter move data so that you can adjust the settings accordingly. To change a volume's cache settings 1. In the Configuration View panel, right-click a volume and select Configuration > Modify Volume Cache Settings. 2. In the main panel, set the read-ahead cache options: • Write Policy. Select write-back or write-through. The default is write-back. • Write Optimization. Select Standard or Super Sequential. The default is Standard. • Read Ahead Size. Select Default, a specific size (64, 128, 256, or 512 KB; 1, 2, 4, 8, 16, or 32 MB), Maximum, or Disabled. 3. Click Modify Cache Settings. 44 Configuring the system

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44
Configuring the system
Changing a volume's cache settings
CAUTION:
•
Only disable write-back caching if you fully understand how the host operating system, application,
and adapter move data. If used incorrectly, you might hinder system performance.
•
Only change read-ahead cache settings if you fully understand how the host operating system,
application, and adapter move data so that you can adjust the settings accordingly.
To change a volume's cache settings
1.
In the Configuration View panel, right-click a volume and select
Configuration > Modify Volume Cache
Settings
.
2.
In the main panel, set the read-ahead cache options:
•
Write Policy. Select write-back or write-through. The default is write-back.
•
Write Optimization. Select Standard or Super Sequential. The default is Standard.
•
Read Ahead Size. Select Default, a specific size (64, 128, 256, or 512 KB; 1, 2, 4, 8, 16, or 32
MB), Maximum, or Disabled.
3.
Click
Modify Cache Settings
.