Re: UDB RAID

["RaymondInFinland" <r m c hofman twi tudelft nl>]

> Hi Chris,
> 
> I think a RAID 5 setup should do the trick for you.
> It's faster than RAID 0+1 (at least for writing)  and 
> will get you more disk space (66 % on 3 disks vs 50 % for RAID 0+1)
> BTW  RAID 0+1 (=mirrored sets of striped disks) is quite hard to do with 
> only 3 disks , 4 would be minimal.
RAID 0 had nothing to do with mirroring. It's a variant on lineair appand. It 
strips the disks but does no mirroring..

> I have no experience with linux raid, so I don't know if
> overhead will cost you performance.
I have a raid-0 partition of 12GB on my multia. The overhead is almost zero 
but i never did any benchmarking so actually i don't know.

Just make sure that you use the latest raidpatches for your kernel and the 
latest raidtools (i believe it was 0.90).

If you have any questions contact me, i worked most things out and got it to 
work.

Grtz
Raymond


"DOS addresses only 1 Megabyte of RAM because we cannot imagine any
applications needing more." - Microsoft, 1980, on the development
of  DOS
"Windows NT addresses 2 Gigabytes of RAM which is more than any 
application will ever need" - Microsoft, 1992, on the development
of Windows NT