> > Buy IDE disks in pairs use md1, and remember to continually send the
> > hosed ones back to the vendor/shop (and if they keep appearing DOA to
> > your local trading standards/fair trading type bodies).
>
>
> I buy three drives at a time so I have a matching spare, because AFAIC
> you shouldn't be doing RAID on unmatched drives.
Err, yes you should :-).
Unless they are spindle syncronised, the advantage of identical
physical layout diminishes, and the disadvantage of quite possibly
getting components from the same, (faulty), batch increases :-).
> Using RAID1 is especially important when using software instead
> of hardware for fault-tolerance because the software is more likely to
> have bugs just because of the 'culture' of hardware vs. software
> developers, and the RAID5 algorithm is very hard to get right anyway,
> especially in failure/rebuild mode. Even on a hardware controller
> RAID5 is still inherently less reliable.
The advantage of RAID1 over a SLED is probably greater than the
advantage of RAID5 over RAID1.
> (...and what's all this about unreliable drives, anyway? Every drive
> I have bought since 1987 still works.)
I haven't had a drive failiure for a long time. Maybe I'm just really
lucky.
John.
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This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:27 EST