A tenant can create a maximum of 360 backups and can have up to 200 TB backup storage space.
(The size of each backup is 4 MB. All VBS backups of a tenant can be stored only in one OBS bucket. A bucket supports a maximum of 5000 backups with a total capacity of 200 TB. Actually, a bucket of OBS supports more than 5000 files. However, if the number of files exceeds 5000, the OBS storage performance deteriorates.)
A maximum of 20 backups can be retained for each EVS disk of a tenant.
Data can be backed up at a maximum speed of 30 MB/s.
A maximum of 5 EVS disks can be concurrently backed up for each tenant.
The EVS disk quota is required for creating VBS backups. Therefore, you must ensure that the EVS disk quota is sufficient before creating VBS backups. The default EVS disk quota of each tenant is 80.