Re:Don’t Be Afraid of RAID
by magicalhippo on Sunday May 24, 2020 @06:02PM
(#23295243)
> My understanding is that ZFS forces you to be a lot less flexible with which size drives you put into the array
That is true, however you can be somewhat more flexible if you go for plain mirroring. Then "only" pairs of disks need to be the same size.
Until not too long ago it wasn't advised to have wildly different sized drive-pairs in the same pool, but IIRC some work was done which alleviates this concern.
Mirroring also allows for more affordable upgrades in the sense that you "only" need to to replace a single pair with bigger drives if you want to increase capacity without adding more drives.
That is true, however you can be somewhat more flexible if you go for plain mirroring. Then "only" pairs of disks need to be the same size.
Until not too long ago it wasn't advised to have wildly different sized drive-pairs in the same pool, but IIRC some work was done which alleviates this concern.
Mirroring also allows for more affordable upgrades in the sense that you "only" need to to replace a single pair with bigger drives if you want to increase capacity without adding more drives.