And another HDD died!!!

[Harrison]

Do you really need Raid 5? Raid 1 would surely do? Also most SATA motherboard controllers have Raid 1 support built in these days.

Or just take a day and back everything up to DVD-R as I do.

[Demon Cleaner]

Or just take a day and back everything up to DVD-R as I do.

That's not possible with files that you update regularly, as it were only files from Pleasuredome.

Do you really need Raid 5? Raid 1 would surely do?

In Raid1 mode you lose 1/2 of your space, whereas in Raid5 mode you only lose 1/4.

[Harrison]

Or 1/3 as you can run a Raid 5 with 3 disks minimum.

I do agree that Raid 5 is a much better solution to data lose prevention, as in Raid 1 you are just getting a basic mirror of one HD to the other so you have an identical mirrored backup of the data at all times, which means that if sone of the disks failed you have to rebuild the while raid set.

Whereas with Raid 5 the disks use block-level striping with parity data distributed across all member disks so when a disk fails it still goes on working, reconstructing the lost HDs data from the other drives seemlessly and when you swap out the dead drive for a new one it just rebuilds the data.

Raid 5 does however have two flaws. First it doesn't handle small files well. When you make a write to the Raid 5 array it has to read and write a whole parity block (stripe) from the set, so if a parity block is larger than the file being written it has to write the whole block each time, not just the file size. So in your case, if you are copying a lot of very small TOSEC set files it will really hit the performance as it will need to write a whole parity block for each file.

The other flaw is actually data loss. In normal operation the seemless reconstruction of data is brilliant, but where there is a single parity block per stripe (the extra disk), the failure of a second drive in a set results in total data loss. Obviously the likelihood of the failure of two drives at once is very low unless the Raid 5 set contains a large number of disks in the set.

[Submeg]

Hey DC cool sig! How did you do that?

[Stephen Coates]

Am I just lucky? Because I have never had a HD fail except the one in my Dell OptiPlex, which had only Windows 2000 and a IRC server and nothing else.

[J T]

I've had one die, in our old Pentium 133 machine. It was a bit of a pain but that's life. It hadn't even been used all that much

[TiredOfLife]

I bought a reconditioned Maxtor cheap, which failed after a short period.
I think it was guaranteed for a short period, but I didn't install it untill after that date had passed.