3.1.1 Summary of Operation

In a VMware vSphere Virtual Volumes environment, virtual machines can be operated with the policy related to the storage.

The VVOL datastore has various functions and the Virtual Volumes that are created there also has various functions. In relation to these functions, it is possible to specify the VVOL datastore selection criteria for locating the virtual machine and Virtual Volume settings.

VVOL Datastore Selection Criteria: Set the functions of the VVOL datastore in the policy. If the policy is set, the VVOL datastores that satisfy the policy become candidates for the virtual machine location.

VM and Virtual Volume settings: Set the functions of the Virtual Volume in the policy. If the policy is set, the settings for the policy are carried out automatically for the Virtual Volume that was created in the various operations related to the virtual machine and the creation of the virtual machine.

Information

In the VMware vSphere Virtual Volumes, policies related to the storage are called "VM Storage Policies".

The functions that can be set as a policy for VMware vSphere Virtual Volumes are as follows:

Virtual Machine Backup
Automated Storage Tiering (Advanced)
Automated QoS (Advanced)
Cache (Advanced)
Security (Advanced)

Point

When using functions described as "Advanced", understanding the storage and function mechanism is necessary. If a VVOL database is set with a name according to the operation purpose by the storage administrator, do not use the functions described as "Advanced" and select the VVOL datastore based on the name.
When a policy is not specified, the default value for each function is set. Automated Storage Tiering, Cache, and Security all work according to the storage device and VVOL datastore configuration. Virtual machine backups and the Automated QoS function do not work.

Note

If the following events have occurred, contact the storage administrator because there is a possibility that an abnormality may occur in the Management Server.
- Virtual machines or VVOL datastores are not properly recognized.
- The storage service provider has become offline.
- The following error events occur in various operations (create, delete, power on/off, create Snapshots, etc.) of a virtual machine:
```
Cannot complete file creation operation
Unable to load configuration file filePath
A general system error occurred
Failed to delete the virtual machine
File filePath was not found
```
If VVOL datastore runs out of space, contact the storage administrator.