While trying to enable storage efficiency on a volume that contains an active LUN I'm getting an error from the DataONTAP API saying there's insufficient disk space. Somehow I didn't enable SE when I created the VOL to house the LUN and now of course the LUN is in production in a VM server running Domino. Is there a way to enable SE on that volume without destroying the LUN? And this is a email server where users "respond with attachments" to senders that love huge documents...and they do it over and over ad nauseum.
Data ONTAP API Failed :Not enough disk space for the operation
No, I am not using thin provisioning. It is exactly the deduplication feature in SE that I want. Currently Domino is not config'd for DAOs. Perhaps I should explore that option instead. I was also thinking that the data could be drastically reduced due to the exchanging of identical emails ad infinitum. I cannot grow the volume because there is no more room on the aggregate...(I wonder if that is a problem?). The host volume is not currently doing snapshot copies, although there is a reserve set. I not sure how snapshot copies would help unless end users are able to do individual email restores...which I doubt.
If you've no snapshot how are you backing it up? to tape or disk device or is it snapmirror to another site?
Reducing / removing the volume's snapshot reserve may not help, it's that space I suspect the storage dedup process is trying to use. Aggregate snapshot could be reduced / removed to give you some wiggle room. Everyone will tell you having aggregates at 100% is not a good idea, and it isn't but I know it can't be avoided sometimes.
Going back to snapshots, when we had Domino (we moved to Exchange a couple of years ago) we used snaps as easy way to recover mail files if they became corrupt or when the user did something stupid. You just mount the required snapshot version of the lun, temporarily, as a extra drive and drag and drop the nsf file somewhere else, normally outside of the Domino data directory structure.
Also, have checked for full text indices in the Domino data directories, these can be huge and are created when a user does a full text search. I think you can disable their creation on the server.