On Wed, Feb 1, 2017 at 2:53 AM, Jan Stransky
<[email protected]> wrote:
>
> 3) Full backup of each dataset as separate host, then second with
> already filled pool. Preferably from SSD to SSD to not be IO limited.
>
In practice if you use the --checksum-seed option with rsync the
timing of the 3rd full is the one that matters although it isn't a
good benchmark test because it will depend on the amount the target
changes. The 2nd time an unchanged file is backed up the block
checksums are cached so the 3rd and subsequent runs do not need to
uncompress the archived copy for the rsync comparison to work.
--
Les Mikesell
[email protected]
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