I wanted to alert you to a couple of notable scalability improvements introduced with Windows Server 8 Hyper-V Beta from the Developer Preview. I’ve highlighted the Beta scalability updates below.

Windows Server 8 Beta Hyper-V Scale Metrics:

  1. 160 logical processors per host
  2. 1024 VMs per host
  3. 64 nodes per cluster
  4. 4000 VMs per cluster
  5. 32 virtual processors per VM
  6. 1 TB memory per VM (No taxes, no entitlements, no penalty for buying a large scale up server)
    • (DEV PREVIEW: This was up to 512 GB per VM)
  7. 64 TB per VHDX
    • (DEV PREVIEW: This was up 16 TB GB per VHDX)

In addition, these scalability metrics lead the industry:

  • VMware vSphere 5.0 support up to 32 nodes in a cluster. Windows Server 8 Hyper-V supports 64 nodes. (2x over VMware)
  • VMware vSphere 5.0  supports virtual disks up to 2 TB in size. Windows Server Hyper-V 8 supports virtual disks up to 64 TB in size (32x over VMware)
  • While VMware supports up to 1 TB of memory per VM, you have to purchase vSphere 5.x Enterprise Plus ($3,500 per processor) and then purchase memory entitlements (taxes) to achieve this goal. Hyper-V 8 has no such tax or entitlement. Such taxes are an anathema to our customers. Every version of Windows Server 8 that ships with Hyper-V will support up to 1 TB of memory per VM.