Our file vault is low on disk space so I want to relocate a percentage of the archive to another volume.  From what I've read while this is processing no one can access the vault view.   We currently have 1.3 TB and would like to move about 300GB to the new volume but I need to be sure it will finish before users need to access it.

Does anyone have an idea of how long this might take?

Our disk volumes are iSCSI 10K RPM drive array.

Thanks,

Todd