The cost of acquisistion of hardware is not the only cost.
- Power
- Cooling
- Maintenance
are a major cost in owning and operating server hardware.
Those costs are a huge factor in driving the server virtualization market. Those same costs apparently are not being considered in the desktop virtualization market by the software vendors or the analysts. I think that if you want a real comparison of the mdel, you have to talk about
- scalability
- power
- cooling costs
- admin costs
of all thos additional servers.
IDC also says that you spend $8 in maintenance for every $1 in infrastruture. (source)
http://www.vmware.com/pdf/server_consolidation.pdf
http://virtualization.com/events-conferences-expo-fairs/2008/04/09/idc-virtualization-forum-west-john-humphreys/
Microsoft Hyper-V
- No memory overcommit (4gb allocated to a VM takes 4gb from the pool) BIG issue for me and HA.
- No pagefile consolodation.
- 2008 Ent or Data needed for some slightly advanced features.
- It requires SCVMM for advanced management features.
- It requires 2008R2 and SCVMM for CFS and more than 1 VM per lun.
- It requires 2008R2 and SCVMM for live migration.
- It requires SCVMM and SCOM for DRS (like feature).
- It requires IE7 and other totally unrelated updates.
- Nic teaming is not native, 3rd party drivers and setup required (*)
- Only suse 10 linux is supported (and windows back to 2000)
- No shared ISO storage, it makes a copy for each mounted iso.
- No USB passthroughs.
- (*) For instance: ProLiant Network Teaming Software must be removed (uninstalled) prior to installing and enabling Hyper-V. There is no known method of uninstalling HP ProLiant Teaming software on machines running Windows Server 2008 Server Core. (source)
- RDP
- ICA
- PCoIP
VDI deployments over the WAN: IPQ from IPeak Networks protects against packet loss. (multimedia over ICA and RDP.)
