SIIG Ultra 133 Raid 1

  • Thread starter Thread starter Cityboy
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Cityboy

Hello,

If I were to switch to a promise Raid 1 Ultra ATA controller from a
SIIG 680 Ultra ATA controller Raid 1, would I encounter loss of data
because it is just a mirrored set? Also, if I stopped using the
controller all together, would each drive show up without the raid
controller?

Thanks
 
Previously Cityboy said:
Hello,
Click to expand...
If I were to switch to a promise Raid 1 Ultra ATA controller from a
SIIG 680 Ultra ATA controller Raid 1, would I encounter loss of data
because it is just a mirrored set? Also, if I stopped using the
controller all together, would each drive show up without the raid
controller?
Click to expand...

Impossible to say. The question is whether the raid-info is
kept at the end of the disk. Linux software raid does it that
way. With that the disks can be mounted individually, the OS will;
just ignore the RAID-info.

As for moving the disks to another controller from a different
company, I do not think so. RAID-1 needs some (very little) admin
info for itself. Mostly geomatry info, event count and "dirty"-flag. I
don't think this information is standardised and I don't think the
place where it is stored is standardized either.

One option is to remove one disk and add it to the new controller
as degraded array (if the promise supports that). Then copy over
the data, move the second disk afterwards and resync.

Personally I saty away from hardware-RAID. It makes you totally
dependent on the hardware controller.

Arno
 
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