РЕГЛАМЕНТ (ЕС) N 1987/2006 ЕВРОПЕЙСКОГО ПАРЛАМЕНТА И СОВЕТА ОБ УЧРЕЖДЕНИИ, ФУНКЦИОНИРОВАНИИ И ИСПОЛЬЗОВАНИИ ШЕНГЕНСКОЙ ИНФОРМАЦИОННОЙ СИСТЕМЫ ВТОРОГО ПОКОЛЕНИЯ (СИС II) <**>. Регламент. Европейский Союз. 20.12.06 1987/2006

Article 4
         Technical architecture and ways of operating SIS II

     1. SIS II shall be composed of:
     (a) a central system ("Central SIS II") composed of:
     - a  technical support function ("CS-SIS") containing a database,
the "SIS II database";
     - a uniform national interface ("NI-SIS");
     (b)  a  national  system  (the  "N.SIS II") in each of the Member
States, consisting of the national data systems which communicate with
Central  SIS  II.  An  N.SIS  II  may contain a data file (a "national
copy"), containing a complete or partial copy of the SIS II database;
     (c) a communication infrastructure between CS-SIS and NI-SIS (the
"Communication  Infrastructure")  that  provides  an encrypted virtual
network  dedicated  to  SIS  II  data and the exchange of data between
SIRENE Bureaux as referred to in Article 7 (2).
     2.  SIS  II  data shall be entered, updated, deleted and searched
via  the  various N.SIS II systems. A national copy shall be available
for the purpose of carrying out automated searches in the territory of
each  of the Member States using such a copy. It shall not be possible
to search the data files of other Member States` N.SIS II.
     3.    CS-SIS,    which   performs   technical   supervision   and
administration  functions, shall be located in Strasbourg (France) and
a  backup  CS-SIS,  capable  of  ensuring  all  functionalities of the
principal  CS-SIS  in  the  event  of failure of this system, shall be
located in Sankt Johann im Pongau (Austria).
     4.  CS-SIS shall provide the services necessary for the entry and
processing  of SIS II data, including searches in the SIS II database.
For the Member States which use a national copy, CS-SIS shall:
     (a) provide the on-line update of the national copies;
     (b)  ensure  the  synchronisation  of and consistency between the
national copies and the SIS II database;
     (c)  provide the operations for initialisation and restoration of
the national copies.