Global Secondary Copy to Tape (Storage Pools) and Device Streams

I should add - this is FR11.28

and this note from BOL highlights the device streams (I assume, which is dangerous) in the Storage Pool Properties - set to 1, should limit the writes to 1 tape 

I want to say this is not expected behavior

I had support take a look, and its not the behaviour they expected

Logs have been uploaded - I’ll let you know.

Any response for this?

Hi Pedro

There is - Sorry - I never updated the forum:

1. Make sure you’re on the latest Maintenance Release
2. But here’s the real catch
   1. When a Stream is set to 1, I was expecting ONLY a single tape drive to be used.
   2. BUT - CommVault could possible take 24 Hours (Maybe more) before that setting was updated across the system !!!
   3. The first “trick” is to change your Stream down to 1
      1. then restart the commvault services on the media agent that uses the Tape Library - That should result in the the Stream being = 1
   4. If this does not work, then go back, and change the STREAM from 1 - back to (for example) 2 - and close the ‘commvault configuration’ panel
      1. Then open it up again, and change from 2 to 1 

I hope this helps someone

sorry us maybe is not 100% related to You problem but we have very very similar to Your but even in easier situation as we have not using Global Secondary Policy but just Normal Storage policy.

Now are similar thing:

• also have 11.28
• our SP also save data into Tape Library. Saves data directly mean primary copy of SP is saving directly to tape 

• normally our SP copy have set to use 2 data streams   and 99% times is using correctly 2 tapes 
• sometimes CV forget what is set on SP copy level and when jobs starting using (usually) 4 tapes (device stream) 
• solution from CV was like from 1980 and similar to Your method in Your example “go to SP copy level and change streams to 3 & save ..then go again to SP copy level and change to “wanted” 2 device stream”

Then You just start jobs and all again works correctly :) ….

Dear CV it was on March ...now We have July ...few monthly MR meantime installed ...and what and still sometimes CV do what want to do ...not keeping what is set on SP copy level ….really i want to see that part of CV code as it must be in style “the programmer cried as he coded”