Follow this KB: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1011387
I, along with my peers, have always had to do this with Bladecenter S, it is ridiculous.
#esxcli storage vmfs snapshot list
Then with the output you can mount the datastores:
To mount a snapshot/replica LUN that is persistent across reboots, run this command:
# esxcli storage vmfs snapshot mount -l label|-u uuid
For example:
# esxcli storage vmfs snapshot mount -l "VMFS_1"# esxcli storage vmfs snapshot mount -u "49d22e2e-996a0dea-b555-001f2960aed8"