freebsd stable - Nov 2006 - Configuration of NVRAM & drives mismatch for error on dell server

Actully one of the server has raid with 4 drives. We
by mistake removed them from the server without
labelling them

Now when we boot then get the error Configuration of
NVRam & drives mismatch for HA-0(normal mismatch)

What i think is that hard drives has some id given by
raid controller and also saves  thsi information in
its bios(NVRAM).Which are mismatch bcoz of the hard
drives are not at the right spot.

Ajit


 
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----- Ajit Mittal <yashmitl@yahoo.com> wrote:
> Actully one of the server has raid with 4 drives. We
> by mistake removed them from the server without
> labelling them
> 
> Now when we boot then get the error Configuration of
> NVRam & drives mismatch for HA-0(normal mismatch)
> 
> What i think is that hard drives has some id given by
> raid controller and also saves  thsi information in
> its bios(NVRAM).Which are mismatch bcoz of the hard
> drives are not at the right spot.
> 
> Ajit
  So you know what the problem is, and you know what caused it.  I guess you are
asking for a solution?

  This isn't FreeBSD related. And don't you say what kind of RAID
controller you are using.  But likely there is a "Load RAID config from
disks" option, or something like it.  I would probably call Dell support
and confirm, before risk trashing your data.

Tom

On 11/22/06, Ajit Mittal <yashmitl@yahoo.com>
wrote:
> Actully one of the server has raid with 4 drives. We
> by mistake removed them from the server without
> labelling them
>
> Now when we boot then get the error Configuration of
> NVRam & drives mismatch for HA-0(normal mismatch)
>
> What i think is that hard drives has some id given by
> raid controller and also saves  thsi information in
> its bios(NVRAM).Which are mismatch bcoz of the hard
> drives are not at the right spot.
>
Label the disks a, b, c, d.  Then remove disks c and d, and reinsert
them but in the opposite slot, then check the status of the raid.  You
may have to do this 24 times, before you hit the right combination.

a b c d    b a c d    c b a d    d b c a
a b d c    b a d c    c b d a    d b a c
a c d b    b c d a    c a d b    d c a b
a c b d    b c a d    c a b d    d c b a
a d b c    b d a c    c d b a    d a b c
a d c b    b d c a    c d a b    d a c b

You maybe able to cheat, if your raid tells you which slots don't have
the correct disk in it.

Scot
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