[rhn-users] Raid repair

[Larry Johnson]

Is this a hardware raid controller ?
Must not be... cause my hardware raid has software for adding/replacing
drives.. (bare or not).
I recommend... when building a new 
server with raid... is do some testing... fail a drive, pull a drive..  
go through the steps before you need them for real... 

I have a few war stories if relevent... 
if this is not hardware raid.. then less to say 

lhcj at gte.net

On Wed, 2004-03-31 at 11:55, Nick Nobbe wrote:
> Wish I could throw some light on this, but I've heard numerous tales of woe
> connected with Raid 5 failures, and failure to repair, on IIS servers (with
> just too much traffic for the poor thing), Exchange servers, and also in the
> Linux world. If you're doing databases, Raid 10 is recommended for fast
> writes and reads.
> 
> At least you got the data back.
> 
> Nick
> ----- Original Message ----- 
> From: "LONNIE TROTTER" <ltrotter at ajusd.org>
> To: <rhn-users at redhat.com>
> Sent: Tuesday, March 30, 2004 12:17 PM
> Subject: [rhn-users] Raid repair
> 
> 
> > Has anyone experienced this.
> >
> >    We had a server setup with physical space for six scsi hard drives.
> > The first three were constructed as a RAID1 array while the last three
> > were constructed as a RAID5 array. One of the drives in the RAID5 array
> > failed and was not repairable. The failed drive was removed and a
> > replacement drive put in its place, we booted into linux rescue and
> > fdsik'd the drive creating a partition table exactly the same as the
> > drive that had failed. Went to boot back in to Enterprise to raidhotadd
> > the replacement harddrive to the RAID5 array, but enterprise would not
> > let us do that. The RAID5 array would not start because there were only
> > two drives available, if the broken drive was placed back in the raid
> > would come up in degraded mode. The problem here is that we had no
> > physical space to have both the failed drive and the replacement drive in
> > at the same time. This meant that the raid would not start, preventing us
> > from raidhotadding the replacement drive. As a result we copied the data
> > off of the raid while it was in degraded mode, put the replacement drive
> > in and rebuilt the raid array, then copied the data back onto it. This
> > was quite time consuming as the data we were moving around was around 25
> > gigabytes.
> >
> > Lonnie Trotter
> > Network Administrator
> > Apache Junction Unified School District
> > Phone: 480-982-1110 Ext. 2050
> >
> >
> > _______________________________________________
> > rhn-users mailing list
> > rhn-users at redhat.com
> > https://www.redhat.com/mailman/listinfo/rhn-users
> 
> 
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