The VSA cluster service is required by a VSA cluster with two members. You can install the service separately on a variety of 64-bit operating systems, including Windows Server 2003, Windows Server 2008, Windows 7, Red Hat Linux, and SUSE Linux Enterprise Server (SLES).
When you install the VSA cluster service separately, the following considerations apply:
The VSA cluster service installation requires 2GB of space.
The VSA cluster service must be on the same subnet as other cluster members.
Do not install more than one VSA cluster service on the same server.
Do not install the VSA cluster service on a virtual machine that runs on a VSA datastore.
Do not install the VSA cluster service on a virtual machine that runs on VSA hosts.
The machine that hosts the VSA cluster service must have only one network interface and one IP address.
All VSA cluster service logs are located in the $INSTALL_HOME/logs folder.
The VSA cluster service uses the following network ports for communication: 4330, 4331, 4332, 4333, 4334, 4335, 4336, 4337, 4338, 4339.
Before starting the service, make sure that these ports are not occupied by any other process.
If the VSA cluster service runs on a virtual machine, reserve 100% of the virtual machine memory. Also, reserve at least 500MHz of CPU time. The reservation is required to avoid memory swapping that can cause the virtual machine to pause for more than two seconds. This can result in the VSA cluster service being disconnected from the cluster and the cluster becoming unavailable.
In a two node Virtual SAN cluster, do not install the cluster service on a virtual machine that is running on one of the two VSA hosts.