Volume subscriptions
A volume subscription enables you to back up an unlimited number of physical and/or virtual machines. All backed up machines share a common storage quota. The subscription period begins at the time of purchase.
Machine subscriptions
A machine subscription enables you to back up either a single physical machine or all virtual machines managed by one Agent for ESX(i) or Agent for Hyper-V. The storage quota applies to this physical machine or to all of the virtual machines managed by the agent. The subscription period begins when the subscription is activated on the machine.
For a physical machine, choose the server or workstation subscription based on the Windows operating system that the machine is running. If you doubt whether the machine is a server or a workstation, refer to the list of the supported operating systems.
For virtual machines managed by Agent for ESX(i) or Agent for Hyper-V, use the dedicated subscription for virtual machines. In addition to backing up virtual machines, this subscription allows you to back up their physical host.
What if the subscription storage quota does not match the storage space you need?
If your backups are likely to exceed the storage quota for the subscription, you may want to use a subscription with a larger storage quota. For example, you can use a server subscription or a subscription for virtual machines on a workstation. Or, you can use a subscription for virtual machines on a server which is not a virtualization server.
The inverse usage is not possible. You cannot back up a server by using a workstation subscription. If you try to back up ESX(i) or Hyper-V virtual machines from a host that uses a server subscription, the backup will fail.
Trial subscriptions
You can get one free machine subscription per account. The storage quota of the trial subscription is equal to that of the standard subscription. The subscription period is limited to two months.
Obtaining a trial subscription is possible until you buy a paid subscription. You can use a trial subscription along with paid ones. The same expiration rules apply to trial and paid subscriptions.
To continue using the service after the trial subscription expires, buy a machine subscription of the same type or a volume subscription, and then renew the trial subscription specifying the paid subscription. Your backed up data will be kept online. Regular backups of your machines will continue uninterrupted. The service will not need to perform a new full backup.
To get a trial subscription, do either of the following: