Virtual Machine Maximums: Simplify (Manishanize) your Server environment..

Virtual Machine Maximums
Item	Maximum
Concurrent remote console connections to a virtual machine	40
Floppy controllers per virtual machine	1
Floppy devices per virtual machine	2
IDE controllers per virtual machine	1
IDE devices per virtual machine	4
Parallel ports per virtual machine	3
RAM per virtual machine	1 TB
Serial ports per virtual machine	4
USB devices connected to a virtual machine	20
USB host controllers per virtual machine	1
Video memory per virtual machine	512 MB
Virtual CPUs per virtual machine (Virtual SMP)	64 VCPU
Virtual disk size	62 TB
Virtual Disks per virtual machine (PVSCSI)	60
Virtual machine swap file size	1 TB
Virtual NICs per virtual machine	10
Virtual SATA adapters per virtual machine	4
Virtual SATA devices per virtual SATA adapter	30
Virtual SCSI adapters per virtual machine	4
Virtual SCSI targets per virtual machine	60
Virtual SCSI targets per virtual SCSI adapter	15

• VMFS3 with 1MB block maximum swap size is 255GB. Recommended solution is VMFS5, not VMFS3 with bigger block size.
• BIOS is configured for one floppy device.
• Any combination of supported virtual NICs.
• USB 1.x, 2.x and 3.x supported. One USB host controller of each version 1.x, 2.x, or 3.x can be added at the same time.
• Guest operating systems might have lower limits than allowed by vSphere.