Snapmirror - destination qtree bigger than source qtree

[semionkras]

I am replicating 100 GB to remote site over slow wan connection , during first initialization snapmirror stopped due to network problems(lost connection) .

I resumed it and seems replicating going well, but i notieced that destination gtree replicated more than 110G already and keep going , since i need couple days to do first initialization of  volume i cant stop it and redu this again , anyone got any idea why i keep replicating more data than source qtree?

[radek_kubka]

I bet your source volume has been de-duped, hasn't it?

QSM inflates de-duped data unfortunately - you have either live with this or consider using VSM instead.

Have a look at this:

http://communities.netapp.com/message/5334#5334

Regards,

Radek

[semionkras]

No , no duplication here on both source and destination , anyway it finnaly ended with 15 gb difference

[rkaramchedu1]

What type of disks are on source and on destination? can you do a vol status -b on both and share the output?

[semionkras]

DESTINATION

Volume              Block Size (bytes)  Vol Size (blocks)   FS Size (blocks)
------              ------------------  ------------------  ----------------
web01               4096                78643200            78643200

SOURCE

Volume              Block Size (bytes)  Vol Size (blocks)   FS Size (blocks)
------              ------------------  ------------------  ----------------
web01               4096                104857600           104857600

I am transferring qtree and not entire volume , so difference you see is becouse of missing qtree on destination ,

The difference in size i was during snapmirror , but i think now it ok