Other changes include support for Apple xSAN, resource usage accounting, migration and conversion of virtual machines, and express installation of Windows and Linux guests.
As with other virtualisation products, The idea is to reduce the number of physical servers required, saving space and power. (For those preferring a type 1 hypervisor, the company also offers Parallels Server for Mac 4.0 Bare Metal edition.)
"This release improves both speed and reliability for virtual environments on Apple server hardware," said Jack Zubarev, president of Parallels.
"Parallels Server for Mac 4.0 is the only solution on the market built and optimized for Mac OS X Server. Additionally the integration with Parallels Virtual Automation enables a single management system for a wide variety of virtual environments and hardware," he added.
Parallels Server for Mac 4.0 runs on Apple-branded servers: Xserve or Mac Pro are recommended. Core 2 Duo or Xeon processors are required to run 64-bit operating systems.
The software supports up to 12 vCPUs and 64GB RAM per virtual machine, with virtual guest disks of up to 2TB. Up to 16 USB devices (8 x 1.1 and 8 x 2.0) and up to 16 virtual network adaptors are supported per virtual machine. Shared folders allow for the movement of data in and out of guest operating systems.
Pricing starts at $US1999. Version 3 customers under maintenance qualify for a free upgrade, and there will be a limited-time upgrade offer for those without a current maintenance agreement.