With Disk Mirroring, it is true you can just replace the bad drive either
source or target. But if corruption was laid down prior to the disc failure
the corruption will gladly be copied right over to the target drive. What
then? Also, what happens to broken extents, extents that cross over multiple
disks?

John

-----Original Message-----
From: Allan Chalmers [mailto:[log in to unmask]]
Sent: Thursday, December 16, 1999 11:34 AM
To: [log in to unmask]
Subject: Re: Replacing a disk in a private volume set


If, however, you are mirrored on your non-system volumes you only need
replace the bad disk drive and it will remirror.  Saved me big grief.

Bill Lancaster <[log in to unmask]> wrote:
John,

It depends. :-)

If the disk just dies there's not much you can do. If, however, the disk
is still functional you can use Lund's De-Frag/X CLONEDISK capability to
copy, sector-by-sector, from the bad disk to a new disk, and put the new
disk in place.

Works great but the process really needs support from Lund to work best.

Bill

At 01:21 PM 12/16/1999 -0600, John Lee wrote:
>When a single disk fails in a private volume set, I just learned that we
>have to scratch the whole set and reload all the data across all the disks
>in the entire volume. Is this really necessary? Is it not possible to
>just restore the one disk from the backup? Thanks for any input.
>
>John Lee
>Vaske Computer Solutions


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