You can have two or three ESXi hosts in a VSA cluster. Each host must meet the hardware configuration requirements to join a VSA cluster.

VSA Cluster Requirements for ESXi Hosts

Hardware

VSA Cluster Requirements

Configuration

All ESXi hosts must have the same hardware configuration.

CPU

64-bit x86 CPUs

2GHz or higher per core

Memory

6GB, minimum

24GB, recommended

72GB, maximum supported

1TB, maximum supported by ESXi

NIC

4 NIC ports must be available on each ESXi host. You can meet this requirements with one, two, three, or four Gigabit or 10Gb Ethernet NICs per ESXi host. To achieve NIC redundancy, you should have at least two Ethernet adapters on an ESXi host. Installing more than two NICs depends on the availability of embedded NICs and additional PCI Express slots on the motherboard. The following NIC combinations are supported:

4 single-port NICs

2 dual-port NICs

2 single-port NICs and 1 dual-port NIC

1 quad-port NIC (does not provide NIC redundancy)

You can have more than 4 NIC ports per ESXi host but not less than 4.

Hard disks

Supported configurations

See the 5.1.1 Release Notes for supported disk and RAID combinations.

Non-supported configurations

A combination of SATA and SAS disks is not supported

JBOD is not supported

RAID controller

A RAID controller

Note

See the 5.1.1 Release Notes for supported disk and RAID combinations.