> I've been reading various posts about TDP for Exchange being slow
> but I can't believe its supposed to be as slow as I'm seeing.   At the
> moment I'm only getting approx 500Kb/sec at a time when no
> other backups are running, i.e network and server and doing very little.
> I've tried various settings for TDP buffers/buffersize to no avail.

Chris,

I agree, those are bad throughput numbers.
Try these values:

backup/archive dsm.opt settings
   TCPbuffsize   128
   TCPWindowSize 63
  *TCPnodelay yes          <********** REMOVE THIS ENTRY
  *largecommbuffers yes    <********** REMOVE THIS ENTRY
   TXNbytelimit    51200   <********** REMOVE THIS ENTRY, it has no effect
for TDPs

Exchange TDP settings
   buffers 3
   buffsize=1024


Thanks,

Del

----------------------------------------------------

Del Hoobler
IBM Corporation
hoobler AT us.ibm DOT com

- Never cut what can be untied.
- Commit yourself to constant improvement.