Roberto Ragusa:
> I usually do not create RAID-1 on the entire disk space, I
prefer
> to partition into fixed size fragments (e.g. 4 470GB on a 2TB disk)
> and create many RAID-1 out of partition couples to use as pv. In
> this way the new shiny 4TB disks are just giving me 8 additional
> 470GB pieces, I can create the new RAID-1s and pvs, add them to the
> vg and then use pvmove to decide where the data should be
Mauricio Tavares:
While I agree with the "add the pvs to the vgs, pvmove
data,
remove old pvs" approach, I would like to ask more about why you do
not use the entire disk for a raid, instead partition both drives in
many volumes and then create raid1 volumes using the respective
partitions in the two drives. Does that limit the damage due to HD
failure somehow better than a single partition?
My guess would be that if always creates everything the same size, it's
probably simpler for him to manage.
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