Upgrades from release 3.1 to release 4.0 are supported with assistance from Unisys. Contact your Unisys service representative to discuss upgrade options, as well as for details of any planning tasks you may need to prepare. For example, before upgrading from release 3.1 to release 4.0, you should consider the following:
The Fabric Management Platform operating system needs to be upgraded to SUSE Linux Enterprise Server (SLES) 11 SP4 before Fabric Manager for release 3.1 can be upgraded.
Some earlier levels of the fabric supported the Host Data LAN (HD LAN). This was an internal Ethernet LAN that routed Interconnect traffic within the platform to Windows partitions and served as a gateway for Windows partitions to communicate with partitions residing on different enterprise partition platforms. The HD LAN was deprecated in Release 3.1, and is removed in Release 4.0.
There are now utilities available for the Unisys service representative to ease and speed up the upgrade process.