Summary: raid question

From: SIMEONE, Allan J. <Allan.SIMEONE_at_rp-rorer.com>
Date: Tue, 06 Jan 1998 19:03:23 -0500

alan_at_nabeth.cxo.dec.com came through with the answer to my raid
question.

I needed to use

disklabel -rw rz33c hsz50 (hsz40 in my case, hsz50 not in my disktab) to
get the size right instead of using

disklabel -rw rz33c rz29b.

thanks,
Allan

>----------
>From: SIMEONE, Allan J.
>Sent: Tuesday, January 06, 1998 6:23PM
>To: 'alpha-osf-managers_at_ornl.gov'
>Subject: raid question
>
>hello,
>
>I have a system that has been set up with raid 5 through the hsz50's.
>There are 5 raid sets.
>4 of the raid sets has 6 rz29b's. The other raid set has 6 rz1cb's.
>When I mkfdmn,
>say on the first raidset, I see all 6 disks light up when initializing,
>so I know the system sees it as one
>big disk.
>
>My question is, how do I do the disklabel (advfs) on this so it isn't
>the size of one rz29b, but have
>the size of the 6 disks? For example: rz33c is 6 disks together as
>best as I can see.
>
>Do I also need a disktab entry for the rz1cb drives, or can I use the
>rz29b size, as I think they are
>the same size.
>
>another question, through the hsz50, three hot spares have been created.
>2 of the spares created
>for raidsets 1-4 and one hotspare for raidset 5. Do I have to do
>anything in the operating system
>for this or is it all set as far as hotspare if a disk goes bad?
>
>thanks,
>Allan
>
Received on Wed Jan 07 1998 - 01:06:13 NZDT

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