Vsan Storage Policy Change

For virtual volumes and vsan datastores vmware provides storage policies that are used as the default during the virtual machine provisioning.

Vsan storage policy change.

In both cases vsan will use additional capacity to make the necessary changes to components to comply with the assigned storage policy. Now the question remains how do i change the policy of a single vm. In the vsphere web client. From the vsphere web client home click policies and profiles vm storage policies.

The policy is editable. Transient capacity is generated when vsan reconfigures objects for a policy change. Because the managed storage policy for non elastic vsan clusters varies based on cluster size adding or removing hosts will trigger a storage policy reconfiguration if it changes the size of the cluster so that it requires a different policy. To edit the policy you must have the storage policy privileges that include the view and update privileges.

Click the vms tab and click virtual machines. Click the virtual machine whose policy you want to modify. It is actually really straight forward. You can change the default storage policy for a selected virtual volumes or vsan datastore.

Another scenario is when an existing storage policy that is assigned to one or more vms is modified. You cannot apply the default storage policy to non vsan datastores such as nfs or a vmfs datastore because the default virtual machine storage policy is compatible with any vsan datastore in the vcenter server you can move your virtual machine objects provisioned with the default policy to any vsan datastore in the vcenter server. On the vm storage policies tab click the storage policy you want to change. One scenario is when a new policy that requires a change in component number and or layout is assigned to a vm.

The vsan default policy only applies to vsan datastores. Click create a new storage policy select the capabilities. Virtual san fails to provision a virtual machine when the policy requirements are not met but it successfully creates the user defined storage policy. How vsan manages policy changes.

You can change the default storage policy for a selected vsan datastore. If you configure the object space reservation then reservation will be done on the vsan datastore for the specified object or the vm on which this policy is assigned. You can see the list of virtual machines that use this storage policy. Prerequisites verify that the vm storage policy you want to assign as the default policy to the vsan datastore meets the requirements of virtual machines in the vsan cluster.

Create a new policy go to vm storage policies. By changing the policy as demonstrated in the video you can simply increase the stripe width for all virtual machines. When editing the policy you cannot change the name of the policy or the vsan storage provider specification.