WE bought a 4 nodes Multi-site HP lefthand SAN which we will use as WAN cluster between 2 sites. The sites are connected by 1GB/s link with latency <1ms. We aim to use synchronous Lefthand replication between the 2 sites by using Network Raid feature. The SAN volumes will be presented to an ESX cluster on the primary site where we'll have a virtual VCenter installed.
We would like to have VMWARE Site Recovery Manager installed to fire up the VMs on the DR site but I am a bit confused how this would work on the DR site in this sort of scenario.
Do we need to have 2 VCenter licenses for this layout to work?
I am also confused as of why we need a full SQL 2008 license for SRM, can't we just use it on SQL express licence on the same machine as VCenter? The solution will have 2 ESX hosts in production and 2 hosts in DR. Total number of VM Servers is 8.
thanks in advance for any help