Known Limitations
Known limitations in VMware Infrastructure 3 may constrain the design of data centers:
As of June 2008 limitations in VMware Infrastructure 3 version 3.5 include the following:
- Guest system maximum RAM: 64 GB
- Number of guest CPUs: 4
- Number of hosts in an HA cluster: 32
- Number of hosts in a DRS cluster: 32
- Size of RAM per server: 256 GB
- Number of hosts managed by Virtual Center Server: 200
- Number of virtual machines managed by Virtual Center Server: 2000
Other limitations exist, for example, volume size is limited to 64 TB with no more than 6 SCSI controllers per virtual machine; maximum number of remote consoles to a virtual machine is 10. It is also not possible to connect fibre-channel driven tape-drives, which hinders the ability to do backups using these drives.
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