[HLUG] Multiple disk setup

Andy Smith andy at lug.org.uk
Fri Apr 18 11:27:19 BST 2008


Hi Benji,

On Fri, Apr 18, 2008 at 11:18:23AM +0100, Benji Weber wrote:
> LVM can concatenate discs though, which is probably what is wanted.

This is almost as bad as RAID-0: while you don't lose everything
when a disk dies, you do still lose up to half the data.  Also since
the data will be (usually -- there are striping options for LVM)
linearly organised across the devices, there is none of the
performance benefit that RAID-0 or RAID-1 would provide.

I would recommend a RAID-1 of at least two devices, then LVM on top
of that for flexibility.

Cheers,
Andy

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