Yep. You would need to check the directory /media/sdb1 for the latest backup. If you wanted to restore a backup you would need to do the following. In root:
Make sure you want to delete your existing zimbra folder before running the backup.
Code:
rm -rf /opt/zimbra/
cp -r /media/sdb1/<date> /opt/zimbra/
After you have copied the backup to the home directory for zimbra you will need to change permissions.
Code:
chown zimbra:zimbra /opt/zimbra -R
I think this should work. It has been a while since I have done this. After chaing permissions. Restart zimbra.
Code:
su - zimbra -c "zmcontrol startup"