I use ESXi 5.1 with an external storage array (HP P2000 G3). One of the guests has grown very much. It was created with an 1TB thin-provisioned disk. At the moment the actual data is about 300GB, but the data occupied (according to the Backup software exceed 700gb). As expected, this results in slower full backup time. I was wondering if I can compact the disk without shutting down the guest. Any help would be great.
It is VM based (using Veeam BR). What about compacting it with the guest stopped? I may be able to do it occasionally. I suppose it is done via the CLI, so any guidance or resource would be great. I would just wish the command had the ability to produce verbose output, ie. watching the progress of compacting.
Thanks very much.