Re: [mythtv-users] OT: LVM, partitioning over multiple drives

[Les Gondor]

At the cost of the aggregate space not being the sum of the capacity of 
the individual drives, the only way to get complete fault tolerance is 
to make the volume a RAID-1 or RAID-5 configuration. Since you are 
already at capacity on at least one spindle, I'm guessing that mirroring 
will cost too much in terms of capacity to be viable for you. I don't 
know what the minimum number of spindles are for LVM RAID-5, but for N 
drives of size S, the capacity will be (N-1)*S. I would count on at 
least 4 drives being needed for RAID-5.

Cheers,
Les Gondor
Michael Knoll wrote:
My video collection has expanded over multiple harddrives, and
currently I'm using a symlink farm to unify the collection.  I was
looking into LVM to join the drives into one partition, but I am
concerned about the risk of failure.  If I join the two drives into
one partition, I've added the failure risk.  Now either drive has to
fail to lose all my data, rather then one drive fail to lose half my
data.
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