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Physical-to-virtual clustering

VMware ESX Server 1

Virtual Machine 1

(on Local disks)

Nonshared

CLARiiON LUNs

Virtual Machine 2

(on Local disks)

Nonshared

CLARiiON LUNs

IN A CLUSTE

Physical Server

Application

Hardware

Storage-group: ESX 1

Storage-group: Physical server

Nonshared

LUNs

(LUN 4, 5, 6)

Shared LUNs

(Quorum)

(LUN 7)

Nonshared

LUNs

(LUN 1, 2, 3)

Figure 24. Out-of-the-box cluster configuration (physical to virtual)

Figure 24 shows a VMware ESX server configured with two virtual machines and a physical server. The

virtual machine boot image for the VMware ESX server must reside on local disks to cluster virtual

machines. The quorum device and/or clustered applications residing on CLARiiON disks are shared at the

CLARiiON level by assigning the respective LUNs to both storage groups. In this case, LUN 7 is assigned

to both storage groups and hence is a shared LUN. This device is then assigned to virtual machine 2 using

VMware vCenter for VMware ESX 4.0/3.x/ESXi or MUI for ESX 2.5.x. Additional CLARiiON disks can

be assigned to each virtual machine for running other non-clustered applications.

The shared resource can be configured as raw disks (ESX 2.x) and/or RDM (physical compatibility mode)

volumes, and are supported for a virtual-to-physical cluster configuration. For RDM volumes, only the

RDM volume needs to be assigned to both servers. The VMFS volume that contains the mapping file can

be in public access mode.

MirrorView/Cluster Enabler (MV/CE) and VMware support

EMC MirrorView/Cluster Enabler (MV/CE) is a replication-automation product from EMC. MV/CE is host-

based software that integrates with Microsoft Failover Cluster software to allow geographically dispersed

cluster nodes across MirrorView links. MV/CE seamlessly manages all the storage system processes necessary

to facilitate cluster-node failover. MirrorView/A replication and MirrorView/S replication are supported.

MirrorView/CE also supports guest clustering for VMware ESX servers. Guest clustering enables high

availability for services and applications running in the virtual layer. This is done by installing Failover

Clustering on several virtual machines, then clustering them as if they were physical nodes.

EMC CLARiiON Integration with

VMware ESX Server

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