Why we use OPAM for XenServer development

Why we use OPAM for XenServer development
https://opam.ocaml.org/blog/opam-in-xenserver/

• manages clusters of Xen hosts with shared storage and networking
• allows running VMs to be migrated between hosts (with or without storage) with minimal downtime
• automatically restarts VMs after host failure (High Availability)
• allows cross-site Disaster Recovery
• simplifies maintainence through Rolling Pool Upgrade
• collects performance statistics for historical analysis and for alerting
• has a full-featured XML-RPC based API, used by clients such as XenCenter, Xen Orchestra, OpenStack and CloudStack

xapi のインストール方法（CentOS6への）なので、メモっておきます。