VM consolidation savings

Microsoft internal IT uses Virtual Server for over 18 months now, some 1250 VMs.

Savings:

• Consolidation Ratio 8 to 1
• 2 million USD saved by consolidation
• From 30 racks to two racks
• Power form 525 Amps to 8 Amps!
• Storage from 19 TB to 11 TB

So why do people insist on not using VM by default?

source: bink.nu