Rebuild Write Cache; Background Suspend/Resume Support - Lenovo ThinkServer RD650 User Manual
12 gb/s megaraid sas
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Also See for ThinkServer RD650:
- User manual and hardware maintenance manual (262 pages) ,
- Operating system installation manual (122 pages) ,
- User manual (226 pages)
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Figure 147 Group Show Progress – Virtual Drive
8.5.12
Rebuild Write Cache
MegaRAID firmware supports drive cache properties during a rebuild operation. The MegaRAID solution temporarily
enables drive cache for the physical drive that is being rebuilt for the duration of the rebuild operation. Users can
enable or disable this feature using the Mega CLI feature.
The MegaRAID software automatically changes the setting for a drive that is being rebuilt. If the PD_CACHE for the
rebuilt drive is already set, the firmware does not need to do anything extra.
The firmware identifies and sets the cache policy of the drives whenever a rebuild operation starts and the catch
policy is reflected in the event logs. The firmware also makes sure to flush the cache just before committing the drive
to the disk group.
8.5.13
Background Suspend/Resume Support
MegaRAID provides a background Suspend or Resume Support feature that enhances the functionality where in the
background operations running on a physical drive or a virtual drive can be suspended for some time, and resumed
later using the Resume option.
The background operations, including consistency-check, rebuild, replace, and background initialization are
supported by an abort operation. If any operation is stopped before completion, it is considered to be aborted. An
aborted operation cannot be resumed from the place where it was stopped.
A suspended operation can be resumed later by using the Resume option, and the suspended operation resumes
from the point where the operation was suspended last.
To perform a suspend and resume operation, go to the Group Show Progress dialog, and perform the tasks
mentioned below. You also can select Show Progress from the Manage menu, or select the More info link under the
Background Operations portlet on the dashboard.
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Chapter 8: MegaRAID Storage Manager Window and Menus
MegaRAID Storage Manager Main Menu
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