SnapManager EOL:
In 2018, NetApp announced end of availability (EOA) for NetApp SnapManager for Microsoft SQL Server, SnapDrive and Microsoft Exchange Server. SnapManager for SQL Server won’t be supported with NetApp ONTAP® 9.4 and later
SnapCenter is the replacement product of SnapManager
https://www.netapp.com/data-protection/backup-recovery/snapcenter-backup-management/
I have many clients using it. it has its pros and cons but for the most part it work ok.
Good luck!