Product manual

Chapter 4: Management with WebPAM PROe
87
• HDD Power Saving – Choose time periods from the dropdown menus.
After an HDD has been idle for the set period of time:
• Power Saving Idle Time – Parks the read/write heads.
• Power Saving Standby Time – Lowers disk rotation speed.
• Power Saving Stopped Time – Spins down the disk (stops
rotation).
• Coercion – Check the box to enable or uncheck to disable.
• Coercion Method – Choose a method from the dropdown menu:
•GBTruncate
• 10GBTruncate
• GrpRounding
• TableRounding
• Write Back Cache Flush Interval – Enter a value into the field, 1 to 12
seconds.
• Enclosure Polling Interval – 15 to 255 seconds.
• Adaptive Writeback Cache – Check the box to enable or uncheck to
disable. See “Adaptive Writeback Cache” on page 363.
• Host Cache Flushing – Check the box to enable or uncheck to disable.
See “Host Cache Flushing” on page 363.
• Forced Read Ahead (cache) – Check the box to enable or uncheck to
disable. See “Forced Read-Ahead Cache” on page 362.
5. Click the Save button.
Viewing Controller Statistics
To view controller statistics:
1. Click the Device tab.
2. Click the Component List icon.
3. Click the controller you want, then click the View button.
4. Click the Statistics tab.
Notes
• Power Management must be enabled on the disk array for the
HDD Power Saving settings to be effective. See “Making Disk
Array Settings” on page 157.
• Power Management functions are limited to the features your
HDDs actually support.