vSphere 7 Clustered VMDK
With the release of vSphere 7, there are many feature that has been announced. However, there is one feature new in vSphere 7 that wasn't heavily marketed. That is Clustered VMDK. So what is Clustered VMDK? Basically it is a VMDK shared by clustering solution on a VMFS volume. In the past, this was not possible especially in cluster requirement such as Microsoft Cluster Service (MSCS) or Windows Server Failover Cluster (WSFC). The reason that this is possible is because of the support for SCSI-3 Persistent Reservation for VMDK. With this, you can fully reduce the need of Raw Device Mapping (RDM). Of course this is not just a vSphere 7 feature. It requires the below and many is similar to a RDM LUN: Your array must support ATS, SCSI-3 PR type Write Exclusive-All Registrant (WEAR). Only supported with arrays using Fibre Channel (FC) for connectivity. Only VMFS6 datastores. Storage devices must be claimed by NMP. ESXi does not support third-party plug-ins (MPPs) in clustere...