If you receive an error when creating a vault store, try restarting the Storage service.

The Application Event Log entries associated with the problem are as follows:

Event ID 13360

An error was detected while accessing the Vault Database 
'FasterVS':

Description:

[Microsoft][ODBC SQL Server Driver][SQL Server]Unable to 
connect. The maximum number of '30' configured user 
connections are already connected. System Administrator can 
configure to a higher value with sp_configure.

Event ID 13336

Unable to create Device EVFasterVS on path D:\mssql\data

Event ID 13360

An error was detected while accessing the Vault Database 
'FasterVS':