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Date:      Tue, 14 Apr 2015 21:05:20 +0300
From:      Lev Serebryakov <lev@FreeBSD.org>
To:        freebsd-fs@freebsd.org
Subject:   =?UTF-8?B?WkZTOiByZXBsYWNlIGFsbCBkaXNrcyBvbiBuZXcsIGxhcmdlciBvbmU=?= =?UTF-8?B?cywgaW4gbWlycm9yIG9yIHpyYWlkWzJdIOKAlCB3aWxsIGl0IHdvcms/?=
Message-ID:  <552D56E0.2040307@FreeBSD.org>

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 Say, I have ZFS pool consist of raidz vdev with 3x1TB disks. It is
2Tb effective storage space, right? Now I could remove 1 disk (as
failed one) and replace it with new, 2TB HDD. After resilvering I
could replace second 1TB HDD, and, then, third one. Now I have raidz
vdev with 3x2TB disks. Will I have 4TB effective storage space in my poo
l?

 I know, that it is impossible to add NEW disk to raidz, but here is
replacement smaller disks with larger ones, one-by-one.

The same question could be asked about mirror and raidz2/raidz3 :)

- -- 
// Lev Serebryakov
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