In vSphere 5. x adds a new vSAN feature. However, this feature requires at least one SSD on the physical machine as the cache, and requires no Raid or the Path-Thru feature of the Raid card to be enabled. However, some RAID cards do not have the Path-Thru function, or the server does not have SSD. This method can be used to fool vSphere and forcibly mark a disk type as SSD. The specific method is as follows:
1. First, enable the SSH Shell function of the ESXi host;
2. Check the identifier of the hard disk you want to set in vCenter (note: Do not add this disk as Datastore)
3. Open the Shell or SSH of ESXi and run the following command:
Esxcli storage nmp device list
In the displayed list, find the identifier we want to set to SSD.
4. Enter the following command. If it is correct, no prompt will be prompted:
Esxcli storage nmp satp rule add-s VMW_SATP_LOCAL-d naa. xxxxxxxxxx-o enable_ssd
Esxcli storage core claiming reclaim-d naa. xxxxxxxxxx
5. Check again in vCenter. The device type has changed to SSD status.
