HP LeftHand SAN Solutions Support Document - User Manual - User Manual VSA 7.0 SP1 for VMware

14 Chapter 1
Network Adapters
The number of network adapters available in a platform affects your options
for configuring virtual switches. VSAs that will have a dedicated ESX Server
platform only need 2 Gigabit network adapters. Platforms that will host VSAs
and other virtual machines should have at least 4 Gigabit network adapters so
that two adapters can be dedicated to the VSA and iSCSI traffic.
Virtual Network Design
The virtual switch that is used for VSA should be at least a redundant Gigabit
network, and should be shared with the iSCSI VMkernel network. If possible,
an additional virtual switch with a VMkernel network for VMotion should be
configured in order to separate VMotion traffic from iSCSI traffic. If enough
network connections are available, the virtual network shown in Figure 2 is
an ideal example for a virtual SAN.