1.基本需求:1 cluster & 1 SSD
2.左邊窗格cluster點一下,右手邊窗格路徑-->Manage-->Settings-->Virtual SAN
3. turn on Virtual SAN and choose "Manual" in Add Disk Colume
4. Click Disk Management bellow General, and it will list all your hosts. Please click to add disk.
Note: you must have at least 1 SSD to be the cache drive.
5. If you click but you can't see anything, please check this page (The Show Filter choose Ineligible):
6. If the disk is Ineligible, open vsphere client and login to this host
7. click the host and goto Configuration-->Storage
8. Remember the device name, backup all data on this datastore and then delete it.
9. SSH to this host and use command to check this device: ls -l /dev/disks/<device_name>
10. Using parted tool to get and remove all its partition.
get: partedUtil get /dev/disks/<device_name>
remove: partedUtil delete "/dev/disks/<device_name>" <partition>.
For example:
11. After remove all its partition, run rescan command: esxcli storage core adapter rescan --all
12. Go back to vcenter web client and do step.4 again. You should see the disk and claim it for VSAN using.
13. If vsan is build successful, you can also check it in vsphere client.
This article is reference from http://www.virten.net/2013/12/identify-and-solve-ineligible-disk-problems-in-virtual-san/