I have an environment of Netbackup 22.214.171.124.
The environment details are as:
Master Server: IBM AIX 6.1, Netbackup 126.96.36.199
Media Server 1 (For AIX systems): IBM AIX 6.1, Netbackup 188.8.131.52
We have and MSDP pool on our media server of 20TB. The filesystem used for this MSDP pool is symantec. (vxfs) with bsize of 8192. The memory on the system is 120GB and it is an IBM Lpar of power7 with 5 CPUs.
When i run backups on MSDP they are slower than the backups taken directly to tape.
Considering the system memory and CPU, i dont think its a resources issue. It might be that netbackup needs some tuning to use these resources.
I need help on tuning the netbackup MSDP for faster backups. I checked the value of MaxCacheSize in the file "/storage/pdc/etc/puredisk/contentrouter.cfg" and it is at 75% "MaxCacheSize=75%".
Any help will be appreciated.
It was more of an nbu issue. I don't believe it was specific to AIX.
I don't remember right off but one was agressive logging. I believe that was fixed in 184.108.40.206 then in 220.127.116.11 there were some other issues that effected performance. The logging issue was specificly with the db/error log which is for tapes. It was impacting backups in environments were no tapes were used at all so it is possible that using tapes would have noticed it even worse. Although I can't say for sure as most of my environments at the time were not using tapes.
here are the release notes for 18.104.22.168:
and in case you are interested 22.214.171.124 was just released:
and the 7.5 late breasking news page which shows the major fixes for each release: