Disk Arrays
cancel
Showing results for 
Search instead for 
Did you mean: 

Raid 5 Disk Failure

CharlieLimaSierra
Occasional Contributor

Raid 5 Disk Failure

I have an ML350 G5 with Raid 5 config with a spare. One of the harddrives appears to have failed - it has a red light.

Will the Raid rebuild by just replacing the failed harddrive with the spare?
6 REPLIES
Ivan Ferreira
Honored Contributor

Re: Raid 5 Disk Failure

Yes, the controller should be rebuilding the information in the spare drive, if you want to check the status of this process, install or open the Array Configuration Utility (ACU) application.
Por que hacerlo dificil si es posible hacerlo facil? - Why do it the hard way, when you can do it the easy way?
CharlieLimaSierra
Occasional Contributor

Re: Raid 5 Disk Failure

Thanks. That was my understanding as well. However; I wasn't at the site when it happened. Evidently when the drives were swapped, none of the configuration was recognized...................any idea what would cause that?
Uwe Zessin
Honored Contributor

Re: Raid 5 Disk Failure

The disk drives MUST be swapped while the SmartArray controller is under power, otherwise there is a chance that it can pick up meta-data from the wrong disk during startup.
.
CharlieLimaSierra
Occasional Contributor

Re: Raid 5 Disk Failure

Thanks. So...........am I correct in saying the drives must be swapped when the Array Config utility is open and if so ............ at what stage - just open or when "view configuration" is open?
Uwe Zessin
Honored Contributor

Re: Raid 5 Disk Failure

No, the ACU need not be running, even the operating system might be down.

The SmartArray controller must not be down during the swap, because it stores configuration data on the disk drives. When you replace a disk under power, the controller recognizes this, updates its configuration data and then starts the data recovery.
.
CharlieLimaSierra
Occasional Contributor

Re: Raid 5 Disk Failure

Great................thanks so much. If the drives were swapped when the power was off and during the next bootup the config was not recognized is there any way to recoup - or is all data lost at that point?