[Sussex] Hardware Raid Question

[Steve Dobson]

Dave

On Sat, Aug 27, 2005 at 04:43:25PM +0100, Dave Chapman wrote:
> I have a 64bit ultra 160 raid card and 2 U160 18Gb hard drives and was 
> wondering what sort of configuration would work best.

That depends upon what you want to do.  There is no single answer that
is best for everyone.
 
> The card has 2 channels so I was thinking 1 drive on each stripped to make a 
> 36Gb partion.

That would give you a single large partition.  You should get good speed
performance as the data is spread over both disks equally, but should *one*
disk die then *all* data is lost.

Mirroring should give slower write times (the data as to be written to
*both* disks), but reads can be quicker than stripping, as a read request
can be made of *both* disks but only has to wait for *one* disk to complete.

> Would I get the best performance using it for /home or /

That depends up the use your system is doing.  If the majority of data
accesses is the the / partition then that is where you want your fastest
disks.  However, if most of the data is going to /home (because you're
editing video for example) then that would be were I place the disks.

Hope this helps

Steve
-- 
Canada Bill Jones's Motto:
	It's morally wrong to allow suckers to keep their money.

Canada Bill Jones's Supplement:
	A Smith and Wesson beats four aces.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Digital signature
Url : http://mailman.lug.org.uk/pipermail/sussex/attachments/20050827/d2b45c75/attachment.pgp