Explain the difference between backup types in Proxmox 3.1

Question

Backup

Good afternoon, hackers!

Given:
Proxmox 3.1
VM on a RAW disk over ext4
Made 2 backups, the difference is only in the types - Suspend and Snapshot

Both without compression on NFS storage
There is no difference in the volume and time of creation.
I uploaded a 3GB archive to the VM.
Similarly, I do 2 backups
. There is no difference.
Question
What is the difference between these backups

PS I did not find any details on the Wiki proxmox

Answer 1

Snapshot - on the "hot", the machine is copied to the live ...
Suspend - the machine is paused, the machine is copied, the pause is pressed ... the optimal
Stop mode - the machine stops shutdown, back up, starts ...

Answer 2

Good afternoon, I have such a problem, when choosing the "Reserve" VM, there is no storage where you can make a backup.
Can you tell me how to save up ((

Answer 3

It is necessary to select the required storage in the datacenter->storage storage settings and indicate that it can store Content of the Dump type