[mythtv-users] NAS mobo

[Bobby Gill]

On Thu, Aug 21, 2008 at 4:10 PM, Dan Ritter <dsr-myth at tao.merseine.nu>wrote:

> On Thu, Aug 21, 2008 at 07:04:42AM -0700, Yan Seiner wrote:
> >
> > What I don't want to do is to implement a solution today and then have
> > to rip it out a year later.  If nothing else, do you have any idea how
> > long rsync takes to dump and verify a TB over an ethernet connection? 2+
> > days, and it's not quite done.....  I hate to think what I'd have to do
> > with a 5 or 10 TB array.....
>
> Gigabit ethernet, 80% efficiency, straight throughput: 800Mb/s,
> = 100MB/s, = 10,000 seconds for a terabyte. So, 2 hours 45
> minutes. Call it 3 hours per TB.
>
> You aren't getting 100MB/s off your disks, or you aren't able to
> write that fast, or you're using rsync inappropriately (perhaps
> in combination with SSH). I would guess all three. If you want
> to transfer a large amount of data quickly, rsync's default
> options aren't the way to go. Rsync might not be the way to go
> for the initial transfer, really.
>
> -dsr-
>
> --
> http://tao.merseine.nu/~dsr/eula.html<http://tao.merseine.nu/%7Edsr/eula.html>is hereby incorporated by reference.
>
> When freedom gets lots of exercise, it protects itself.
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Sorry, haven't followed the entire thread so disregard if irrelevant but I'd
agree with Dan. I transfer many TB regularly over my home network using
mounted NFS and regular ol' cp -rup for large initial transfers and just
have rsync -avzdp afterwards in cronjobs or as required.

Bob
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