VMware just released its major product addressing some compatibility issues and extending support to some technologies.
Here the complete What’s New list:
-) Expanded Support for Processors
ESX Server version 2.1.1 includes support for the AMD Opteron processor.
-) Support for IBM TotalStorage® SAN Volume Controller (SVC)
ESX Server version 2.1.1 includes support for the IBM TotalStorage® SAN Volume Controller (SVC).
-) Support for ProLiant ML570 G2 CD-ROM Drive
ESX Server version 2.1.1 includes support for the ProLiant ML570 G2 CD-ROM drive.
-) Support for LSI 1020/1030 Controllers in Shared Mode with Mirrored Disks
ESX Server version 2.1.1 supports using a LSI 1020/1030 SCSI controller in shared mode with mirrored disks.
-) Support for More Than 48GB of RAM in a Non-NUMA Server
ESX Server version 2.1.1 supports using more than 48GB of memory on non-NUMA servers.
-) Support for Citrix MetaFrame
For ESX Server 2.1, running Citrix MetaFrame in a Windows 2000 Server guest operating system may have caused the system to fail or show errors. This issue is resolved in ESX Server version 2.1.1.