RPI4, Debian, Docker, and HA container install how large of volume should I create?

Newbie here, I think HA will be the largest docker app I will be using, how large of a docker volume should I create?

bowenp

32 GB is minimum requirement for VM

I would believe that is more than enough

32 is more than enough, but 64 will provide a bit more space for backups and the likes.

WallyR, I split the diffence so to speak, I resized the partition to 50gigs. The plan is to pickup a NAS for backups for all the devices.

Offline backup is a smart move, but having a few backup copies left on HA makes a restore a bit easier.
What do you intend to do with the rest of the space on the harddrive/card?
No need not the use it.