[OmniOS-discuss] Ang: mixing 512B and 4K disks in vdev

[Johan Kragsterman]

Hi!

-----"OmniOS-discuss" <omnios-discuss-bounces at lists.omniti.com> skrev: -----
Till: omnios-discuss <omnios-discuss at lists.omniti.com>
Från: Michael Rasmussen 
Sänt av: "OmniOS-discuss" 
Datum: 2015-11-19 19:24
Ärende: [OmniOS-discuss] mixing 512B and 4K disks in vdev

Hi all,

I have to replace a HDD disk in a mirrored vdev which is using ashift=9.
The problem is that all new HDD's is 4K disks so I wonder if anyone has
made some performance measurements of using a 4K disk with ashift=9 in
contrast to the obvious ashift=12?

As I understand it you cannot detach a vdev from a pool so it is not
possible to replace both disks with 4K disks. How do you handle a
situation like this? 





You could attach the first one, and when it resilvered, you can detach the other one, to be able to have the same drives in that particular vdev.

And in the same way, you can swap the rest of the vdevs as well, if you would like to change all drives to 4k.

Rgrds Johan





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