Common rules are based on data services that are generic for all types of storage and do not depend on a datastore. These additional services become available in the VM Storage Policies interface when you install third-party I/O filters developed through vSphere APIs for I/O Filtering. You can reference these data services in a VM storage policy.
- Caching. Configures a cache for virtual disk data. The filter can use a local cache or a flash storage device to cache the data and increase the Input/Output Operations Per Second and hardware utilization rates for the virtual disk.
- Replication. Replicates virtual machine or virtual disks to external targets such as another host or cluster.
For more information about I/O filters, see Filtering Virtual Machine I/O.