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From: Stefan Johansson <texas.johansson@gmail.com>
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Subject: zfs; adding vdev with same size and raid level but different layout
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Date: Thu, 25 Sep 2014 22:09:55 +0200
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Hello!

I=92m running FreeBSD 9.3-RELEASE with a zpool in raidz1 with 5 2TB =
disks.
Now I=92m planning to expand the pool with a vdev with the same =
effective size (8TB).
Would it be a bad idea to add 3 4TB disks in raidz1 to the pool instead =
of another 5 2TB disks?
What could be the disadvantage with such a setup?

Regards
Stefan=