Disabling automatic rebuild
Q: Can I disable the automatic rebuild behavior?
A: Yes, you can disable automatic rebuild and copyback operations. This is useful for when you want to schedule rebuild behavior, as a rebuild will consume significant controller resources and possibly slow down your production I/O.
Note that these are controller-wide policies, so you will have to always manually start rebuilds and copyback if you disable them.
Use the following commands to disable the automatic rebuild and copyback.
MegaCli
# MegaCli64 -AdpAutoRbld -Dsbl -aN
# MegaCli64 -AdpSetProp -CopyBackDsbl -1 -aN
Storcli
# storcli64 /cx set autorebuild=off
# storcli64 /cx set copyback=off
Related Articles
Drive failure behavior
Q: What is the default behavior when a drive fails? A: The default settings for a MegaRAID controller will enforce an automatic rebuild policy, and usually an automatic copyback as well. The automatic rebuild, in the presence of commissioned hot ...
Management Utilities Overview (LSI)
If you are new to LSI MegaRAID and LSI SAS HBA controllers, this guide will provide a general overview of applicable management utilities and firmware flash utilities, and recommended usage scenarios for these tools. LSI MegaRAID Management ...
StorCLI Common Commands
Information for general use: /cx bzw. /vx stands for the Controller/Virtual Drive Number. /ex bzw. /sx stands for the Enclosure/Slot ID. Firmware Update sudo storcli /cx download file=/path/to/firmware.rom Information on the Controller and ...
Silencing RAID controller alarms
Q: I would like to disable the beep on the controller. How do I accomplish this? A: LSI MegaRAID controllers have three different options for managing the fault alarm; Enable, Disable, and Silence. Disabling the alarm will disable it permanently ...
Locating failed drives
Q: I need to remove a failed drive from my array, but I’m not sure which slot it resides in. How can I physically identify the failed disk? A: The faulted drive should be automatically marked with the red fault light. If this did not occur ...