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System Requirements - Virtualization


EXPRESSCLUSTER enables both Guest Cluster and Host Cluster configuration.
The following correspondence table describes about virtual softwares and functions.


Virtulization Software Inter-guest OS clusters Guest-to-Host OS cooperation Non-stop failover
Windows Server 2022 Hyper-V Y N N
Windows Server 2019 Hyper-V Y N N
Windows Server 2016 Hyper-V Y N N
Windows Server 2012 R2 Hyper-V Y Y Y*1
Windows Server 2012 Hyper-V Y Y Y*1
VMware vSphere 7.0 Y N N
VMware vSphere 6.7 Y N Y
VMware vSphere 6.5 Y N Y
VMware vSphere 6.0 Y N Y
VMware vSphere 5.5 Y N Y
Xen Server 6.5 Y Y Y
Xen Y N N
PowerVM Y N N
  • *1
    Only quick migration

Inter-guest OS clusters

Guest Cluster fails over the operations running on the guest OS.
EXPRESSCLUSTER can operate on a virtual machine in the same way as a physical server. When constructing a guest cluster, please select a compatible EXPRESSCLUSTER product for the OS you use.

Guest-to-Host OS cooperation

Cooperation between Host OS and Guest OS capables to failover by physical failure.

Non-stop failover

In case of a failure that can be recovered by live migration, the system can be moved to the standby system without any stopping of operations.
・Compatible with virtualized infrastructure (*2) that supports live migration.
・Specifically, the FC path redundancy and NIC redundancy configuration is effective in detecting a failure in one of the paths and migrating it.

  • *2
    VMware and Hyper-V are supported. XenServer will be supported in an upcoming update. Hyper-V requires a quick migration.