6.5.1

Table Of Contents
n
If your virtual machine has a snapshot tree associated with it, you cannot add, change, or remove the
I/O filter policy for the virtual machine.
For information about troubleshooting I/O filters, see the vSphere Troubleshooting documentation.
Migrating Virtual Machines with I/O Filters
When you migrate a virtual machine with I/O filters, specific considerations apply.
If you use Storage vMotion to migrate a virtual machine with I/O filters, a destination datastore must be
connected to hosts with compatible I/O filters installed.
You might need to migrate a virtual machine with I/O filters across different types of datastores, for
example between VMFS and Virtual Volumes. If you do so, make sure that the VM storage policy includes
rule sets for every type of datastore you are planning to use. For example, if you migrate your virtual
machine between the VMFS and Virtual Volumes datastores, create a mixed VM storage policy that
includes the following rules:
n
Common Rules for the I/O filters
n
Rule Set 1 for the VMFS datastore. Because Storage Policy Based Management does not offer an
explicit VMFS policy, the rule set must include tag-based rules for the VMFS datastore.
n
Rule Set 2 for the Virtual Volumes datastore
When Storage vMotion migrates the virtual machine, the correct rule set that corresponds to the target
datastore is selected. The I/O filter rules remain unchanged.
If you do not specify rules for datastores and define only Common Rules for the I/O filters, the system
applies default storage policies for the datastores.
vSphere Storage
VMware, Inc. 308