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[zfs-discuss] enlarge a mirrored pool

Subject: [zfs-discuss] enlarge a mirrored pool
From: Ivan Wang
Date: Fri, 12 Oct 2007 20:09:27 PDT
Hi all,

Forgive me if this is a dumb question. Is it possible for a two-disk mirrored 
zpool to be seamlessly enlarged by gradually replacing previous disk with 
larger one?

Say, in a constrained desktop, only space for two internal disks is available, 
could I just begin with two 160G disks, then at some time, replace one of the 
160G with 250G, resilvering, then replace another 160G, and finally get a 
two-disk 250G mirrored pool?

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