|
Actually if you have a Raid card such as UW has (they really are quite cheap now a days) or even a newer Mother board that supports 4 Sata drives you are much better running 4 drives in a Raid 5 or 6 then running a simple Raid mirror with 2 drives. First you gain the advantage of the large disk space of the 4 drives (though you lose 20% of that due to Raid overhead), then you gain the speed of having the data striped over the 4 drives (even the fastes 10k rmp drives are still a speed bottleneck), and finally most importantly you gain the redundancy of all data on each individual drive backed up on the other 3. If a hard drive fails you can replace it with a new one and rebuild all the data in no time.
As others have said though the raid should only be one of several back up options you implement.
It is probably the one drive that is failing UW, but you don't mention if you are actually running it in a raid setup.
If not try the computer without that one drive for a bit and see if you still have problems. Move your drives connections around on the Card itself, quite possible it's the card starting to fail or at least one channel on it.
I remember you having a problem mentioned in chat about the raid card recognizing the full size of a new drive...did you resolve that?
That could most definately affect how the drive is working. If the sectors and tracks are identified wrong believe it or not the drive will try and work, but will not work accurately.
|