SQL Server data file distribution -

i newbie sql server administration , config. apologies if appear confuse / mix terminologies here.

i trying find way take snapshot of current state of database - lock in sort of filegroup/data file - treating master data. track further dml/updates on data new filegroup /data file. dont intend change table definitions , data can change in intermediary state.

is possible achieve in sql server?

i trying find solution of creating master snapshot @ filesystem level , able restore master snapshot.. @ time.

thanks in advance!