Quoting Dexter Filmore <Dexter.Filmore@xxxxxx>:
current situation:
machine with 8 sata ports, currently 4 disks in raid5.
new array is gonna be 5 disks.
now the question is: pluck one drive, let the array degrade and move data as
fast as possible to the new array?
Or: build new array with 4 drivers, then pull old array and grow new array to
5 drives?
Sounds like your new 5 disk array will have brand new disks? and larger?
If your filesystem allows, you could also just add your new disks in,
one at a time. (assuming your running software raid)
Once all your new disks have been inserted one at a time, you then
grow your raid array to fill up the un used space, and then, you grow
your filesystem to fill up the un used space.
Takes a long time, and becomes more tricky if your array is mounted on
/ because then you need to use a rescue disk, or boot CD to modify
your / system.
Building your new array degraded with 4 disks, copying data, and then
adding 5th disk sounds like it might be the easiest. Nice that you
have the 8 controllers to play with.
Cheers,
Mike
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