09-09-2013 11:29 PM
Hi all,
We performed tape to tape duplication for one of our client...
When we compared the size of the data, it was less from the original copy from where it was duplicated.
I have attached the screenshot for the reference... In the attachment the first one is the new tape to which the data was duplicated ( Around 630GB)
Note: There is no other data stored in the second tape.
Please let me know the reason.
Thanks
Solved! Go to Solution.
09-09-2013 11:48 PM
One was MPX'ed the other was not, therefore more use of blocks on the MPX'ed tape.
09-09-2013 11:48 PM
One was MPX'ed the other was not, therefore more use of blocks on the MPX'ed tape.
09-10-2013 12:06 AM
Thanks revaroo...
But when we expired the backup id's in the second tape through GUI, the data size is still seen in the available_media command. Is it normal or is there anything else to be done to make it reusuable?
Thanks in advance...
09-10-2013 12:34 AM
is there anything else to be done to make it reusuable?
ALL images need to expire to make a tape reusable.
See this excellent blog: https://www-secure.symantec.com/connect/blogs/understanding-how-netbackup-writes-tape
You can use 'Images on media' report (or bpimmedia from cmd) to compare images on the 2 tapes.
09-10-2013 01:00 AM
Perfectly normal, see Mariannes post below for the explanation