ESX – Moving .VMDK to another drive slow. I noticed we was running out of space for on a Virtual Disk so decided to move this to a HD, rather than an SSD.
First of all
I tried copying the .vmdk via the Datastore Browser in ESX. This appeared to be taking forever just for a 250GB file!
I then thought this could be caused by a local backup that was running, but after stopping this. It wasn’t the case! I then tried the transfer via SSH on ESX using SCP, but again this didn’t help, apart from showing me it was only transferring at 13MB/S from an SSD to a HD.
After a bit of research and back-tracking a number of others were experiencing the same issue from Google searches. They were all suggesting using Veeam, the thing was a) this is a Paid for option. b) this isn’t any good for me as I needed to move a single drive, not the whole VM.
I then tried a SCP to a local NAS (Network Attached Storage). This appeared to work wonders as i was getting 30-40mb/s pretty solid. I decided to stick with this solution.
I know it’s not the best, but should hopefully get you by rather than the ‘faf’ I had go through!