Problem:
How do I safely remove a datastore for a single host without affecting any other storage devices?
Solution:
1. Open vCenter click on datastore to be removed and click Actions
2. Click Unmount Datastore
3. Choose the host to remove from and click OK
4. Datastore is unmounted
5. Go to Hosts and clusters and select the host you unmounted from
6. Select the disk and click detach
7. Click Yes
8. Task is completed
9. Change the heartbeat datastores if needed
10. Login to the SAN and identify the Initiator groups of the hosts you just removed the storage from. This LUN has two groups
11. You can immediately see the hosts we removed the storage from and need to remove these from the initiator group
12. To be on the safe side check the initiator in vCenter
13. We can see this ties up with the ones we want to remove
14. Remove the initiators
Confirm the warning
15. Select the cluster and click Rescan Storage
The datastores should disappear
