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RAID 1 breaking mirrors and rebuilding drives

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Adishesh
Occasional Contributor

RAID 1 breaking mirrors and rebuilding drives

Hi,

How to break the mirror and  enable again.

 

my use case is as given below

1. i have a HP Gen 9 BL460c server blade with two SAS disks. Two disks are configured for RAID 1

2. I want to update host operatin system configuration.  Before starting configuration changes, i want to disable/break the mirror so that if enything goes wrong wrt to my configuration changes on host operating system,  I can revert to old setting by restoring from RAID mirroring

 

I am looking for online mode procedure.

i have hpssacli tool installed on the node.  

Please provide steps/hpssacli commands that can be executed from hostoperating system to enable/disable RAID 1 mirroring.

 

 

Thanks and regards,

Adishesh

 

2 REPLIES
Torsten.
Acclaimed Contributor

Re: RAID 1 breaking mirrors and rebuilding drives

Even if you break the mirror you need to remove the disk - so there is no real online method.

Better shutdown, remove a disk and boot again. If something go wrong, shutdown, insert the backup disk only and boot up.


Hope this helps!
Regards
Torsten.

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Adishesh
Occasional Contributor
Solution

Re: RAID 1 breaking mirrors and rebuilding drives

Hi Torsten,

Thanks for the reply.

With HP Smart array controller i was expecting simple steps to disble/enable mirror.

in my use case i can not performe disk removal activity as HP blades are  located remotely and i have only ssh access to blades. 

Thanks and regards,

Adishesh