Backup and FreeBSD/ZFS

krad kraduk at googlemail.com
Thu Feb 4 09:39:26 UTC 2010


On 3 February 2010 19:21, Svein Skogen (Listmail Account) <
svein-listmail at stillbilde.net> wrote:

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> On 03.02.2010 19:14, LoH wrote:
> > If my memory serves, you're looking at something similar to taking a
> > snapshot and then sending it to the tape device, so zfs send <snapshot>
> > | (tape device access). This, IIRC, is functionally identical to
> > dump/restore.
>
> Except for one smallish detail. Dump handles "tape is full, switch to
> next one" in a relatively painless way... Let's just say that ...
> there's a reason I've invested in an autoloader for my home server (it
> will, among other things, hold about a terabyte of Nikon .NEF files if
> that means anything)
>
> //Svein
>
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If you combine snapshoting with a redundant array, and maybe a secondary
pool that you zfs send your files ystems to (perhaps on a different box) its
questionable whether having stuff on tape has any advantage. If you are
taking the tapes off site it may be worth it.


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