topic Re: Simulating Failure in Disk Enclosures

Simulating Failure

N athan — Tue, 02 Apr 2002 10:56:01 GMT

I have a raid 5 configuration with a hotspare, is there anyway of simulating/recreating a failure so the hotspare gets rebuilt. One of our servers onsite have had a hdd failure (its bleeping), i am trying to run through the steps that i have to take on a old serv er. Sorry for so many posts

Re: Simulating Failure

Insu Kim — Tue, 02 Apr 2002 11:36:05 GMT

Just pull out one of the disk drives in a RAID5 LUN and now, you will notice that you can continue to access the LUN without any problems.

After the disk array finishes rebuilding the failed disk's data on an available global hot spare, put the disk drive back to the disk array where it originally was.

Hope this helps,

Re: Simulating Failure

Marino Meloni_1 — Tue, 02 Apr 2002 14:07:08 GMT

hi
another way to test it is to start netraid assistant and to select one hdd, open the proprieties and make a "fail drive"
the rebuild will occur
bye

marino

Re: Simulating Failure

Patrick Wessel — Wed, 03 Apr 2002 08:53:42 GMT

Insu,
I'm not a storage expert, but I always have strange feelings when I hear this "pull the disks" methods.
How do you test the ABS of your car? Drive high speed and hit the break as hard as possible and try to steer? Have you ever tested the airbag of your car by driving against a wall?
Pulling a disk is an easy method, but it means stress for the disk.