If you do not need to resignature a VMFS datastore copy, you can mount it without changing its signature.

Before you mount a VMFS datastore, perform a storage rescan on your host so that it updates its view of LUNs presented to it.

1

Log in to the vSphere Client and select the server from the inventory panel.

2

Click the Configuration tab and click Storage in the Hardware panel.

3

Click Add Storage.

4

Select the Disk/LUN storage type and click Next.

5

From the list of LUNs, select the LUN that has a datastore name displayed in the VMFS Label column and click Next.

The name present in the VMFS Label column indicates that the LUN is a copy that contains a copy of an existing VMFS datastore.

6

Under Mount Options, select Keep Existing Signature.

7

In the Ready to Complete page, review the datastore configuration information and click Finish.

If you later want to resignature the mounted datastore, you must unmount it first.