With two drives you can double your storage, but halve you MTBF (mean tme 
between failure), or effectively double your MTBF for the original capacity 
(RAID 0 vs RAID1). LVM across two disks has essentially the same problem as 
RAID0 in this case.
I would seriously think about 3 drives and RAID 5, which will give you 
sufficient capacity with a degree of redundancy, all mounted at a single mount-
point.
Tim B.
On Thursday 31 May 2012 15:37:57 Rob Malpass wrote:
> Hi all
> 
> Thanks for your replies.   I think I'm going down the DIY route.
> 
> On a related note, one thing I want to do is have all these files in one
> folder - which is impossible as they need to span across two physical
> drives.   So what I have at present is:
> 
> Physical Drive a: 1973-2001
> Physical Drive b: 2002-2012
> 
> Is there a way to see these as one folder 1973-2012?  If so, how do I set
> this up?
> 
> Cheers
> Rob
> 
> 
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