Raid controller backup

  • Thread starter Thread starter Clive
  • Start date Start date
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Clive

I've just installed a Raid card (Raid 1) on my XP Pro system. Happy with the
performance.

What happens if my controller card breaks and I can't get one of the same
type/model. Will either disk boot on it's own from the motherboard IDE
controller? (I had to install drivers for the car)

Thanks

Clive
 
Previously Clive said:
I've just installed a Raid card (Raid 1) on my XP Pro system. Happy with the
performance.
What happens if my controller card breaks and I can't get one of the same
type/model. Will either disk boot on it's own from the motherboard IDE
controller? (I had to install drivers for the car)

Try it out! In a sensible design, the admin data for the controller
is written at the end of the disks and the OS does not get to see
that part. If so, the disks work individually with a normal controller.
Linux software RAID, e.g., does this and I have used single disks as
non-raid disks without problem.

However a stupid design may put the admin data at the beginning of the
disk. Then the disks will not run on another controller or s non-RAID,
unless you are lucky.

The admin data is needed so the controller knows which disks are in
the array, how large the array is and whether it is consistent or not.
Needs very little storage, usually just some kBs, but has to be
stored on the disks.

You can just remove both disks and then try one on an ordinary
IDE channel. If it works, great. If not, go for a different
solution or get a spare controller. After the test you should
rebuild the array from the disk you did not use in the test.
Since that is more or less the failure-scenarion, your controller
should be able to deal with it.

Arno
 
Clive said:
I've just installed a Raid card (Raid 1) on my XP Pro system. Happy with the
performance.

What happens if my controller card breaks and I can't get one of the same
type/model. Will either disk boot on it's own from the motherboard IDE
controller? (I had to install drivers for the car)

Using XP Pro you didn't need a RAID card to do RAID 1 in the first place as
the mobo EIDE controllers may have been sufficient. That being the case
then you could be assured of bootability.
 
Ron Reaugh said:
Using XP Pro you didn't need a RAID card to do RAID 1 in the first place as
the mobo EIDE controllers may have been sufficient. That being the case
then you could be assured of bootability.
How, could I achieve Raid 1 (hardware) with just XP Pro?

Clive
 
Because it comes with hardware disk controller.... ;-)
Then, you can install XP on it.
 
Clive said:
How, could I achieve Raid 1 (hardware) with just XP Pro?

There is no significance to hardware RAID 1 here; no significant
performance advantage over SW RAID 1 and no booting advantage over firmware
RAID 1. SW/firmware RAID 1 is just as good. So use XP Pro's intrinsic SW
RAID 1.
 
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