To see the identity_gap setting for a table, use sp_help.
For example, the zero value in the identity_gap column (towards the end of the output) indicates that no table-specific identity gap is set. mytable uses the server-wide identity burning set factor value.
sp_help mytable
Name Owner Object_type Create_date ------- -------- -------------- ----------------------------- mytable dbo user table Nov 29 2004 1:30PM (1 row affected) . . . exp_row_size reservepagegap fillfactor max_rows_per_page identity_gap ------------ -------------- ---------- ----------------- ------------ 1 0 0 0 0
If you change the identity_gap of mytable to 20, sp_help output for the table shows 20 in the identity_gap column. This setting overrides the server-wide identity burning set factor value.
sp_help mytable
Name Owner Object_type Create_date ------- -------- -------------- ----------------------------- mytable dbo user table Nov 29 2004 1:30PM (1 row affected) . . . exp_row_size reservepagegap fillfactor max_rows_per_page identity_gap ------------ -------------- ---------- ----------------- ------------ 1 0 0 0 20