Before you upgrade the NetWare VM guest servers on any Xen-based VM host servers, be sure to upgrade the host server to either SUSE Linux Enterprise Server (SLES) 10 SP4 or Open Enterprise Server (OES) 2 SP3, as applicable.
For SLES 10 SP4 upgrade instructions, see the SLES 10 SP4 Installation and Administration Guide.
For OES 2 SP3 upgrade instructions, see Section 5.0, Upgrading to OES 2 SP3.