I am building out a high availability solution and I am looking for advice in the design and implementation.
My infrastructure currently consists of 1 windows 2008 Enterprise server
Dell 2950III -> 32Gigs ram -> windows 2k8 enterprise, hyperV
Dell 2950II -> 28gigs ram -> windows 2003R2
Dell 2850 -> 12 Gigs ram -> windows 2003
Dell MD3000i -> iSCSI SAN
I am going to be updating the dell2850 to windows 2008 enterprise 64bit and make it a domain controller. My 2 2950s will be clustered in an Active/Passive setup with the 2950III bearing the active role. My VHD files will be on the iSCSI box.
My question is this:
What are the pros / cons of making the hyperv machines highly available at the hypervisor level vs. making them clustered at the VM level ? Is it also possible to combine the clustering failover roles at the hypervisor and at the VM level ?