Moving Alternate Storage to another disk.

Hello,

Dovecot 2.3.4_3 on FreeBSD 11.2.

I am using mdbox Alternate Storage since about two years without any problems. However, the disk containing this storage is almost full and I have to move this data to another disk, probably zpool.

Would it be okay to do the following? like cp/mv/cpdup.

1. Shut down dovecot (and mail server) so no new mail comes in.
2. Copy/move all files in ALT location to new disk, using shell commands

3. Change the path to ALT in dovecot-conf mail_location.
4. Change the 'dbox-alt-root' soft-links in each users main (INBOX) directory to point to this new location.
5. Start up dovecot and mail server.

Am I missing something or maybe there is a better way?

-- Thanks, and have a nice new year. bOnK