This section will show you how to unmount a LUN or detach a datastore from multiple VMware ESXi 5.x hosts. The methods discussed here include how to perform this one host at a time and how to accomplish this for multiple hosts at the same time. You will be provided with steps to unmount a LUN from an ESXi 5.x host, which will include unmounting the filesystem along with detaching the device.
The first method is for one host at a time, and the steps must be performed for each of your ESXi hosts.
Note
Note that this is for the 5.x host only. Removing a LUN from an ESXi/ESX 4.x host is very complex. For information on unmounting a datastore in ESXi/ESX 4.x, see Removing a LUN containing a datastore from VMware ESXi 4x and ESX 4.x at http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1029786.
Before unmounting a LUN, make sure the following issues are addressed:
If the LUN in use is used as a VMFS datastore, you need...