@Danp The guy who set the VMs up doesn't want to risk losing any data, as they operate 24/7 and many are customer-facing. If I'm not mistaken, this wouldn't be a problem if we made backups, but he wants to do everything possible to maintain what we have as much as possible, and minimize downtime.

Good Day,

We're in a bit of a pickle. We need to upgrade our hypervisors from XenServer 6.5 to the latest version of XCP-ng, but without losing any data or changing the partition scheme. After a bit of digging, we read in the XCP-ng documentation that this is possible, along with instructions of how to do so. To test this process, we:

1. Inserted into one host machine a DVD with the XCP-ng 8.2 ISO burned onto it, and booted up the machine into this DVD
2. Followed along with the installation prompts until it searched for any present XenServer installation (host, guests, etc.). It should have found the existing installation, but instead reported the following:

"Only product installations that cannot be upgraded have been detected. Continuing will result in a clean installation, all existing configuration will be lost. Alternatively, please contact a Technical Support Representative for the recommended upgrade path."

We based this process on what we read here: https://docs.xcp-ng.org/installation/upgrade/#-upgrade-from-xenserver

• we heeded the warnings within this section

Is there something about this process that we do not understand? My current assumption is that the process of upgrading consists of: insert media that has the XCP-ng ISO, follow its prompts and it should detect what is present. Our goal is to upgrade from XenServer 6.5 to XCP-ng 8.2.1 without losing our current guest VMs or changing their partition scheme.

Assistance is appreciated, as we use XCP-ng on other hosts and truly favor it above XenServer.

Thanks,
Chris