Offhost Proxy and CBT

[collinp]

I was reading documentation that when using Offhost Proxies, the CBT information is stored on the Offhost Proxy while in Onhost mode, CBT information is stored on each Hyper-v host. Would CBT be more reliable in Offhost mode since the CBT info is stored on the offhost proxy and not susceptible to hosts rebooting, vm migrations, host updates, etc?

[foggy]

Actually, it is not stored on the offhost proxy permanently but rather temporarily copied there at the time of backup. After the backup, this data is deleted, so the only permanent place where CBT information is stored, is the host itself.