Re: Anyone used FreeNAS?

[Alex Fraser <me@xxxxxxxxxxx>]

Bruce Stephens wrote:
> Alex Fraser <me@xxxxxxxxxxx> writes:
>
> [...]
>
> > rsync is pretty quick to work out there is nothing to do, so it really
> > depends on how much the data changes.
>
> Also how many files you have.  If you have a ridiculous number you may
> find that rsync spends a large amount of time just finding out that
> the list of files isn't different.

Yes; I should have said that it is about as quick as you can 
realistically get. The significant features are that it does the process 
at both ends simultaneously and transmits the list efficiently. (I 
haven't tried the "incremental scanning" mode of recent rsync, it may 
not be quite so good if the files are mostly unchanged.)

If the number of files is very large (actually, I think the number of 
directories is a better metric), then yes, it will take a while. But we 
are talking about processing many tens of thousands of unchanged files 
per minute, for a consumer hard drive.

Alex