Which between NVMe (PCle) and NVMe-oF (RoCE v2) features better scalability?

During the interaction between the server and SAN storage, the server encapsulates data in SCSI commands and implements data interaction through various network transmission protocols.

2200 V3/2600 V3 supports SSD, SAS and NL-SAS disk drives.

Incremental backup requires the full backup and incremental backup of the last time to fully restore data.
Data reconstruction is slower than that of full backup, resulting in a long restoration period.

What is the maximum number of disks supported by the OceanStor 2200 V3?