Raid 1 recovery question

My SCSI disk 0 failed. The server boots OK from disk 1. Can I re-address
disk 1 to 0 and still boot normal? I assume I can then get a replacement
disk, address it as 1, re-establish the mirror.
Thanks in advance.

If one of your hard drives fails, you will need to replace the drive, and
then rebuild the RAID set.

Obviously this can be a scary time, it always is for me. As you can always
make a mistake and wipe your working drive clean of its data.



Step One: Backup all the data and config from the system now that its
working off of the drive that is working. Rule of thumb is to never rely on
the raid alone.



Step Two: Install the replacement drive for your failed one. (Erase it if it's
not already erased)



Step Three: Add your replacement drive to the raid mirror set

At this point you will want to rebuild your mirror set from the working
drive to the replacement. This may require you to break the mirror set as
it is configured in you raid controllers memory and then rebuild and when
presented with what drive will be the 'source' make sure you assign the
working one.



That should be it... Some raid controllers give you the option to build live
(online) so your system can boot back into the OS and you can work... or
you have the option to rebuild offline and just wait.



From my past, I rather rebuild offline... yes it takes time... but better
safe than sorry.

I'm safe re-addressing the good drive from 1 to 0 and still have it boot?

"Mr. Smith" wrote:

> If one of your hard drives fails, you will need to replace the drive, and
> then rebuild the RAID set.
>
> Obviously this can be a scary time, it always is for me. As you can always
> make a mistake and wipe your working drive clean of its data.
>
>
>
> Step One: Backup all the data and config from the system now that its
> working off of the drive that is working. Rule of thumb is to never rely on
> the raid alone.
>
>
>
> Step Two: Install the replacement drive for your failed one. (Erase it if it's
> not already erased)
>
>
>
> Step Three: Add your replacement drive to the raid mirror set
>
> At this point you will want to rebuild your mirror set from the working
> drive to the replacement. This may require you to break the mirror set as
> it is configured in you raid controllers memory and then rebuild and when
> presented with what drive will be the 'source' make sure you assign the
> working one.
>
>
>
> That should be it... Some raid controllers give you the option to build live
> (online) so your system can boot back into the OS and you can work... or
> you have the option to rebuild offline and just wait.
>
>
>
> From my past, I rather rebuild offline... yes it takes time... but better
> safe than sorry.
>
>
>

There shouldn't be a need to readdress the drive in this situation. But you
should be safe to do so. As it was only a mirror set, both drives would
have containing exactly the same information.

So if the drive boots now it should boot just fine if you readdress it.




"Mike" <> wrote in message
news:644D9E7F-B4FB-46D3-800A-...
> I'm safe re-addressing the good drive from 1 to 0 and still have it boot?
>
> "Mr. Smith" wrote:
>
>> If one of your hard drives fails, you will need to replace the drive, and
>> then rebuild the RAID set.
>>
>> Obviously this can be a scary time, it always is for me. As you can
>> always
>> make a mistake and wipe your working drive clean of its data.
>>
>>
>>
>> Step One: Backup all the data and config from the system now that its
>> working off of the drive that is working. Rule of thumb is to never rely
>> on
>> the raid alone.
>>
>>
>>
>> Step Two: Install the replacement drive for your failed one. (Erase it if
>> it's
>> not already erased)
>>
>>
>>
>> Step Three: Add your replacement drive to the raid mirror set
>>
>> At this point you will want to rebuild your mirror set from the working
>> drive to the replacement. This may require you to break the mirror set
>> as
>> it is configured in you raid controllers memory and then rebuild and when
>> presented with what drive will be the 'source' make sure you assign the
>> working one.
>>
>>
>>
>> That should be it... Some raid controllers give you the option to build
>> live
>> (online) so your system can boot back into the OS and you can work... or
>> you have the option to rebuild offline and just wait.
>>
>>
>>
>> From my past, I rather rebuild offline... yes it takes time... but better
>> safe than sorry.
>>
>>
>>