Home > RAID, Storage > Adjust RAID rebuild rate

Adjust RAID rebuild rate

 
 
Steps to adjust hardware RAID rebuild rate using ‘megacli’. Most often after a disk replacement in case of disk failure, we want to increase the RAID rebuild rate to speed up the process. Also if RAID rebuild is causing performance issues with host, then we might need to consider reducing the rebuild rate. The command lines pasted below helps to control it,

 
1) Get current RAID rebuild rate,
 

host100:~# megacli -AdpGetProp RebuildRate -a0
                                     
Adapter 0: Rebuild Rate = 15%

Exit Code: 0x00
host100:~# 

 
2) Set RAID rebuild rate to 25%,
 

host100:~# megacli -AdpSetProp RebuildRate 25 -a0
                                     
Adapter 0: Set rebuild rate to 25% success.

Exit Code: 0x00
host100:~#

 
 

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Categories: RAID, Storage
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