On 18/01/2007, at 9:55 PM, Jeremy Teo wrote:
On the issue of the ability to remove a device from a zpool, how
useful/pressing is this feature? Or is this more along the line of
"nice to have"?
Assuming we're talking about removing a top-level vdev..
I introduce new sysadmins to ZFS on a weekly basis. After 2 hours of
introduction this is the single feature that they most often realise
is "missing".
The most common reason is migration of data to new storage
infrastructure. The experience is often that the growth in disk size
allows the new storage to consist of fewer disks/LUNs than the old.
I can see that is will come increasingly needed as more and more
storage goes under ZFS. Sure, we can put 256 quadrillion zettabytes
in the pool, but if you accidentally add a disk to the wrong pool or
with the wrong redundancy you have a long long wait for your tape
drive :)
Boyd
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