There are many posts on the internet which include screenshots of the SP1 for Hyper-V Failover Cluster upgrade process such as here. I'd like to add some points to these from my experience of upgrading a 3 node Hyper-V Failover Cluster to SP1.
All in all my experience went quite smoothly although some hiccups were encountered along the way. Here is a quick overview of the upgrade process:
Upgrade Virtual Machine Manager (VMM) 2008 R2 to SP1
Update Hyper-V hosts VMM Agents
Wait 1/2 days and monitor
Upgrade first Hyper-V host to SP1
Wait 1/2 days and monitor
Upgrade second Hyper-V host to SP1
Repeat above steps as necessary...
Run Cluster Validation Wizard
Upgrade VM guests Integration Components
Now for the stuff that I recommend you take note for your plan:
- Have all media, software etc ready and at hand (VMM SP1, SP1 for WS08 R2, Latest Drivers and firmware for server)
- Update your hosts drivers and firmware- SP1 for WS08 R2 make some major changes to the OS so it's an ideal time to carryout this maintenance. I used HP's Proliant Support Pack (PSP) to update all the drivers and the HP Smart Update Firmware DVD before installing SP1.
- I'm aware of issues with broadcom NIC's after installing SP1 for WS08 R2 requiring driver updates and then reconfiguring the NICs network settings. Better to do this cleanly before the SP1 upgrade than post upgrade due to issues.
- SP1 for VMM 08 R2 upgrade- make sure you use the exact version of media (eg volume, retail etc) used to install VMM 2008 R2 that you plan to use when upgrading to SP1. For some reason MSFT have not released a downloadable SP1 installer so you must obtain the full VMM 2008 R2 SP1 media to carryout the upgrade.
- Before making significant changes to a server, it's always advisable to restart the OS before commencing.
