Questions on Partitioning across two drives

[Roberto Ragusa]

Kevin J. Cummings wrote:
> You have 2 choices:
> 
> 1) Create a RAID-0 partition which spans both drives.  This results in a
> single partition.  The drives need to be the same size in order for the
> striping to work.  These drives are not the same size.  You could stripe
> the first 8GB for a 16 GB partition, but it would leave you with a 24 GB
> 2nd partition on sdb, 16/24 is not quite what you want.
> 
> 2) Use LVM to merge the 2 physical partitions into a single logical
> volume which spans both drives.  Since both logical partitions can be
> allocated out of the single logical volume, you can make them whatever
> size you need (ie, both of 20GB should be doable).

There is also:

3) Create a RAID-linear. It is similar to RAID-0, but just uses the first
space and then the second, instead of striping. This solves the same-size
issue of solution 1) and is basically equivalent to 2) (but without involving
the LVM).

Best regards.

-- 
   Roberto Ragusa    mail at robertoragusa.it