CA Service Desk Manager (SDM) does not use the SMB v1 protocol itself. However, if it is present in a shared component then SDM can utilize it.
The URL below describes how to enable and disable the SMB v1 protocol. If SMB v1 is disabled, Windows is still able to access shared files and SDM will still be able to operate without any problems.
Therefore, disabling the SMB v1 protocol should have no impact on the operation of the CA Service Desk Manager product.