Re: Change Raid Settings

The ServIT guy stopped by. They agree with everything you say here, which
increases my confidence in them. (I already have confidence in youse guys.)

They also say I could go to RAID 6 with a hot spare. Without a system
reload. With a SAVE 21 first. So I could lose 2 drives in each RAID set
and still be good. I asked about a performance hit and he's going to look
into that.


On Tue, Sep 24, 2013 at 11:29 AM, DrFranken <midrange@xxxxxxxxxxxx> wrote:

So the set with some drives with no stripe (the model -070 guys have no
stripe) is easy. Go into SST work with Disk Units and Work with Disk
configuration and work with removing disk units. Pick one and remove
from ASP. In a couple hours or less it will "Go Away". Once that
happens pick the drive also and remove it from RAID. (I THINK This step
will require DST but brain fuzzy on SCSI) Now Start Hot Spare. Done.

The set with all drives striped will require you to end RAID and that's
more 'risky' so you'll want a full SAVE 21 first. Then Pick a drive,
remove from ASP, when it's gone then do END RAID on that set (see the
risky part?) Now tell it to start RAID with Hot Spare. Done.

- Larry "DrFranken" Bolhuis

www.frankeni.com
www.iDevCloud.com
www.iInTheCloud.com

On 9/24/2013 8:53 AM, Jeff Crosby wrote:

*This message was transferred with a trial version of CommuniGate(r) Pro*
Yesterday we had a disk failure at 4:27pm, which happens to be 3 minutes
before we run our entire days business. Good timing, eh? We ran
everything and then replaced the drive and rebuilt the RAID. I honestly
don't remember the last time we had a disk failure before this.

Our System i 520 is on i 7.1 and has 16 drives in it. There are 2 RAID
sets with 8 drives each. Disk utilization is less than 19% so we have
plenty of space. (We used to have an IXS way back when, which is why

we're

way over capacity on disk.)

The service guy (ServIT) thought, since we're on 7.1, it might be

possible

to change each of those 8-drive RAID sets to a 7-drive RAID set with a

hot

spare. I questioned him because of the age of our hardware and said he
still thought it was possible. He's going to look into it today.

Since there are some very smart hardware people on this list, I'm going

to

ask here. Can that be done? Can that be done without a reload?


Thanks.

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