• Clustering, as outlined below, is supported for agent‑less PNs; however, a shared network and shared IP is not supported.

• Due to a VMware limitation, VMware does not support dynamic disks. Nonetheless, onQ provides a way to back up dynamic disks as outlined in Run custom backup scripts; however, you will not be able to use QUARK to restore the dynamic disks.

• For agent‑less PNs, FLR is supported; however, there are limitations. Go to File‑level Restore Limitations.

• VMware does not support snapshots of raw disks, RDM physical mode disks, or guest operating systems that use an iSCSI initiator in the guest. As outlined above, snapshots for dynamic disks and logical drives are not supported. Therefore, Quorum protection for agent‑less PNs supports cluster nodes and local drives so long as they are primary partitions on basic disks. If the RN of such a cluster node is brought up in production mode, then the RN will connect to a production SAN as configurations from the PN will be replicated and are available on the RN.

• CIFS volumes are not supported. When a NAS share is mounted on a PN, the security credentials are accessible for applications running in the PN. However, in the case of a PN proxy, those security credentials aren't accessible.

• Using the onQ Filter Driver, as described in (Agent‑based PNs) Methods of Performing Incremental Backups, to back up agent‑less PNs is not supported.

• If a PN on the HA has custom (RN) networks defined and the DR has the default network defined, the RN on that DR might be configured with the custom networking information instead of the default networking information. The workaround is to create an xvf.dat file, then save it to C:\Program Files\Quorum\usr on the HA’s PN. As in the example below, edit the file to include the PN’s networking information. In the following example, 10.20.16.144 is the default IP of the PN enrolled on the HA, 255.255.248.0 is the default subnet mask, and 10.20.16.1 is the default gateway. Afterward, rebuild the RN. The PN on the HA continues to show the custom networks while the RN on the DR indicates what you specified in the xvf.dat file.