You say you have duplex "locked at the switch."

What about at the NIC?
If you force duplex at the switch and don't force the NIC, you'll most
likely end up at 100/HALF, (for both the 100Mb/s and the GigE
connections.)

Also, for what it's worth, you shouldn't force speed/duplex on GigE
connections.

Auto Negotiate is required on GigE for proper flow control.

Auto Negotiate is not to be feared....With current hardware, you'll
rarely see problems unless you have a configuration mismatch (one end of
connection auto, and the other forced.)

According to the IEEE docs, the "proper" behaviour when an interface is
set to auto-neg and is connected to a "forced" interface, is for the
"auto" interface to drop to the "lowest assumed functional" mode,
(typically Half duplex 100Mb/s)

Paul

> -----Original Message-----
> From: veritas-bu-admin AT mailman.eng.auburn DOT edu 
> [mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of 
> Brooks, Jason
> Sent: March 22, 2006 8:44 AM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] NDMP, Mirapoint E-Mail Appliance and Speed
> 
> 
> I've been following the Backup Speed discussion recently.  And now I'd
> like to throw another one into the same or similar fray.  Recently, we
> implemented NDMP backups for our Mirapoint mail appliance.  We have it
> in a 3-way NDMP setup where the backup flows as follows:
> 
> Mirapoint -> Media Server (Win 2k3) -> Adic Scalar w/LTO3.
> 
> Link one from Mirapoint to the Media Server is copper.  
> Mirapoint has a
> 100Mbit card and the Media has a 1GB card; both are locked at full
> duplex at the switch.
> 
> We have one policy with 2 schedules; 1 for a Full and 1 for nightly
> differentials.  The differentials are about 5GB, but are 
> taking 5 hours.
> By contrast, the first full was about 48GB, which took 8 hours.  The
> jobs are not multiplexed - awaiting word from vendor about 
> impact on the
> box.  
> 
> Is anyone else using NDMP for a Mirapoint appliance?  Seeing anything
> similar?  Suggestions?
> 
> Thanks,
> Jason
> 
> ------------
> Jason Brooks
> Computer Systems Engineer
> IITS - Longwood University
> voice - (434) 395-2916
> fax - (434) 395-2035
> mailto:<brooksje AT longwood DOT edu> 
> 
> _______________________________________________
> Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>