[geeks] Well, THAT was a setback

[Patrick Finnegan]

On Monday 18 January 2010, Phil Stracchino wrote:
> On 01/18/10 16:21, Phil Stracchino wrote:
> > Time to retest tape backup...
> 
> The good news: six ... make that seven ... er ... eight concurrent
>  full backups running right now, and no sign so far of any network
>  issues.  So it looks as though it was indeed the 3C905 driver, not
>  the TCP stack, that fell over.

Cool. :)

> The bad news:  The LTO-2 drive is shoeshining.  I can't get enough
>  data over a 100Mbit connection to keep it streaming.  It's going to
>  have to go onto a machine that's connected to the main server via
>  gigabit.  I really need to go to a gigabit core switch...  and I
>  probably need to get gigabit interfaces into at least two more of
>  the faster clients.

Yeah.  I'd strongly recommend staging the backups to disk.  LTO-2 
requires 40MB/sec to stream, so you'll need reasonably fast disk to act 
as a cache.

Pat
-- 
Purdue University Research Computing ---  http://www.rcac.purdue.edu/
The Computer Refuge                  ---  http://computer-refuge.org