Hyper-V, VMware, and VirtualBox Hypervisor Limitations

This is a quick table comparing key features and limitations of some hypervisors available today, such as VMware, Hyper-V, and VirtualBox:

 

Name Maximum host cores / CPUs Maximum host memory Maximum host disk volume size Maximum number of guest VM running Maximum number of logical CPU per VM guest Maximum amount of memory per VM guest Maximum number of SCSI + IDE disks per VM guest Maximum disk size per VM guest
Containers, or Zones 144 cores / 72 CPUs 4 TB No limit 8191 No limit No limit No limit No limit
VMware Player 4.0 4 cores No limit N/A  ? 8 8 GB (32-bit); 64 GB (64-bit)  ? 2 TB
VMware Server 2.0 16 CPUs No limit N/A 64 2 8 GB 4 IDE; 60 SCSI 950 GB
VMware vSphere Hypervisor (ESXi) 4.1 160 logical cores 1 TB 2 TB minus 512 bytes 320 8 255 GB 4 IDE; 60 SCSI 2 TB minus 512 bytes
VMware vSphere ESXi 5.0 160 logical cores 2 TB 64 TB 512 32 1 TB 4 IDE; 60 SCSI 2 TB minus 512 bytes
VMware vSphere Hypervisor (ESXi 5.5) (free) 16 NUMA Nodes / 320 logical CPUs 4 TB Depending on filesystem 512 8 1 TB 4 IDE; 60 SCSI 62 TB
VMware vSphere Hypervisor (ESXi 5.5) 16 NUMA Nodes / 320 logical CPUs 4 TB Depending on filesystem 512 64 1 TB 4 IDE; 60 SCSI 62 TB
VirtualBox 4.1.x 256 logical cores (Windows version limited to 64) No limit No limit No limit 32 1 TB 4 IDE; no limit for SATA, SCSI, SAS 2 TB
Hyper-V Server 2008 R2 64 cores / 8 CPUs 1 TB No limit 384 4 64 GB 4 IDE; 256 SCSI 2 TB
Hyper-V Server 2012 320 cores / 64 CPUs 4 TB No limit 1024 64 1 TB 4 IDE; 256 SCSI 64 TB

Source: Wikipedia