Backup Copy Job targeting a SOBR (Scale-Out Backup Repository) with a Synology extent are failing.
Error;
Error (3): No scale-out repository extents have sufficient disk space to store the backup file. (System.Exception)
No extents found for backup chain.
Tried this registry fix , no luck https://www.veeam.com/kb2282
The SOBR extent has 2.9 TB of free space.
Backup objects size is 11.9 TB





I don’t know if this will help the required size
Svc.VeeamBackup.RTSDispatcher.log
14.05.2025 10:58:22.234] <32> Info (3) [RTS] Updating Extent id = 96963ca1- - actual free space to 722861084509. 2494699352227 is excluded from real free space 3217560436736 as 1% of capacity reserved
[14.05.2025 10:58:22.234] <32> Info (3) [RTS] Estimated free space on Extent id 96963ca1- is 722861084509 bytes, (original size = 722861084509, active tasks = 0)
[14.05.2025 10:58:22.234] <32> Info (3) [RTS] Updating Container id = 003b65d0 actual free space to 722861084509. 2494699352227 is excluded from real free space 3217560436736 as 1% of capacity reserved
[14.05.2025 10:58:22.234] <32> Info (3) [RTS] Estimated free space on Container id 003b65d0-is 722861084509 bytes, (original size = 722861084509, active tasks = 0)
[14.05.2025 10:58:22.234] <32> Error (1) Failed to dispatch pending task. SessId: [2d6ccbe9-558b, Task: [Storage:vm-111 CTransformAlg_9e062d9f-ec35-46e5-916e-0e2bf1368f9f from job "-Storage Copy (Synthetic Full)" (task id:2dd3f2e0-fdfc-4e5f-ac00-11bc0281221f, task sess id:00000000-0000-0000-0000-000000000000, job sess id:2d6ccbe9-558b-41d9-9aa8-b0350f05a6db)] (System.Exception)
[14.05.2025 10:58:22.234] <32> Error (1) No scale-out repository extents have sufficient disk space to store the backup file. (System.Exception)