Netbackup Performance Issues.
Greetings.. I am having some performance issues that I was wondering if I could get some possible pointers on.
The architecture involved here is:
Master server - netbackup 6.5.4 running on windows 32bit - XEON 2.66 - 8 gigs of RAM - Dual HBA and Dual Teamed gigabit ethernet
Client in Question - netbackup client 6.5.4 running on windows 32bit - XEON 2.66 - 4 gigs of RAM - Dual HBA and Dual Teamed gigabit ethernet - client also runs replication exec.
During the evening, replication exec replicates about 4TB worth of data to storage on the client.
During the day, I back the data up to tape - or recently - to a new quantum DXi7500 VTL.
The problem is, the backups are going extremely slow.. I am seeing the following for a portion of the job that is running right now:
kbps - 2499, 1814, 2051, 1215, 651, 1312, 2553, 2595 - and that is being backed up to a VTL with 20 free drives available, over fiber!!!
I have looked at the CPU load, memory load, and network load on both the master and on the client and both are under 50 percent. The policy is setup currently with about 30 different jobs, all of which consisit of a directory with many subdirectories. The root of each of these directories represents one of the sites I am replicating during the evening. I have about 4 "NEW STREAMS" inserted throughout the jobs as the job used to be configured with no "NEW STREAM" directives and I guess I was in hopes this might help things some.
Here are some additional settings:
Limit Jobs Per Policy - 18
Media Multiplexing - 16
Concurrent Write Drives - 16
Maximum Jobs Per Client - 20
VTL drives are emulating LTO3.
Currently only 8 jobs from the policy are running, but I think thats because I had the "jobs per policy" setting lower than it is now before the job started and I am assuming that the change wont take place "mid job..".
One thought that I had while writing this post up was that I could just replicate sites directly to the VTL - but this might not be a viable option. This was all running fine to 6 tape drives previously - but Quantum professional services came in to setup the new VTL and stole two fo the drives to dedicate to NDMP duplications.. Ever since things have not been right - and dont even talk to me about NDMP and netbackup.. its failing miserably and has been escalated to Symantec engineers...
Any help would be apprecaited - this just seems way too slow.