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Old 06-14-2008, 09:48 PM
Dan
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Default Raid 1

I have a Dell Desktop and had some problems with it. After Dell had me
repair it and reinstall the OS I am left with a Raid 1 configuration. I want
to get back to a Raid 0 configuation or a no raid setup. Different techs at
Dell have given different answers.

I can go into the Bios and the only SATA options I have are Raid or Auto
detect, ho disable Raid. I have it on auto detect.

If I go into the Intel Manager (CTRL-I) I have the option to delete the Raid
on either or both drives.

My question is, if I do this, I think I lose all data on both drives and the
OS. Is that correct?

If I do delete the Raid configuration, will I still be able to boot up with
my Windows XP disk and reinstall the OS? It doesnt destroy the CD and DVD
drives abilty to boot up does it?

A step guide would be very helpfull. The only guides I see on the Dell sight
are configuring a Raid 1 to a Raid 5. Nothing about how to revert back to a
Raid 0 from a Raid 1

Thanks for any help.

Dan



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  #2 (permalink)  
Old 06-15-2008, 09:16 AM
kony
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Default Re: Raid 1

On Sat, 14 Jun 2008 17:48:23 -0400, "Dan"
<dkenn@nowhere.com> wrote:

>I have a Dell Desktop and had some problems with it. After Dell had me
>repair it and reinstall the OS I am left with a Raid 1 configuration. I want
>to get back to a Raid 0 configuation or a no raid setup. Different techs at
>Dell have given different answers.


Going to a non-RAID is easy. Going to a RAID0 you will have
to start over, or duplicate the volume contents onto a 3rd
drive then copy it back after having deleted the RAID1 array
and defined the two as members of a RAID0.

>
>I can go into the Bios and the only SATA options I have are Raid or Auto
>detect, ho disable Raid. I have it on auto detect.


This is fine, you would not need to change this even if
there were more options.


>
>If I go into the Intel Manager (CTRL-I) I have the option to delete the Raid
>on either or both drives.


Turn off system, unplug data cable from one. Being a RAID1
array, the whole point is that if one array member drops out
(which is effectively what you are causing when you unplug
one) then the other member has all the data.

Thus, with only one drive detected you can delete the array
and even if something went wrong (which it shouldn't) you
still have the untouched 2nd drive that you have unplugged
to rebuild the array from should the need arise.

Once you have deleted the array with only one drive
connected, reset system and see what it reports. If it nags
you about no members of an array and/or stops, enter into
the Intel Manager again and define the drive as a single
drive span, not stripe. Be careful with this option, if
there is more than one way to do it or if it prompts you to
decide something akin to whether you want it to be a data
source or be an empty new volume, of course you want to keep
the data. Read the raid manual for more info.



>
>My question is, if I do this, I think I lose all data on both drives and the
>OS. Is that correct?


Not necessarily, and not usually unless you made a wrong
choice in the Raid BIOS menu (Intel Manager menu).

Deleting an array, only that act, doesn't delete data it
just deletes logical array assignments so every drive in the
system at the time is then considered a single drive. Note
that this also means after you get it working with only one
drive connected, after confirming it boots windows and your
files are there, that you would shut down, turn off, and
repeat the procedure with the other drive.


>
>If I do delete the Raid configuration, will I still be able to boot up with
>my Windows XP disk and reinstall the OS? It doesnt destroy the CD and DVD
>drives abilty to boot up does it?


No it doesn't, but as mentioned above this should not be
necessary.


>
>A step guide would be very helpfull. The only guides I see on the Dell sight
>are configuring a Raid 1 to a Raid 5. Nothing about how to revert back to a
>Raid 0 from a Raid 1


Look to Intel for a manual on their website, but first
unplug one as mentioned above, check the raid Intel Manager
menu to see what choices you have after choosing "delete".

If worst comes to worst and you accidentally wiped out the
data on one drive, turn off system and connect both drives.
Now when you go into the Intel Manager menu it sees one
drive is a member of the RAID1 array and will prompt that
the array is incomplete and allow you to define the drive
that was deleted from the array as a member of that array
again and rebuild the array onto that drive so you are back
where you started.

Of course the most conservative answer is always to make a
full backup of the contents of this RAID volume before
changing anything, but IMO this is a straightforward enough
procedure that it shouldn't be any more necessary than it is
to regularly have a backup of that data for any other reason
(which hopefully you do do anyway).

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