I see.
I didn't notice that optimizing the tables helps reducing the space, however our production server accomodates over 100,000 users and we know it's not good for large site.
In addition, unfortunately, zimbra support replied us that mailbox_id will be changed after executing zmmailboxmove.I think volume_id will be changed as well.
So, if we want to delete those indice, we may need "index consistency check" tool as blob consistency check tool for messages in the store. |