Technical data

JSC 36381 MARCH 30, 2000
Baseline
3-3
3.1.5 General Network Support
3.1.5.1 OPS LAN Time Synchronization
To synchronize timekeeping across the network, the OPS LAN Time
Synchronization utility executes the server-based program Tardis for two
minutes. Tardis broadcasts the server’s current time as the network time source.
A complementary program on the client, K9, accepts the time broadcasts during
this interval and updates the client clock. No automatic clock update is
performed on the File Server’s internal clock. Prior to time synchronization, the
File Server’s internal clock should be checked and manually adjusted to match an
external reference. Time Synchronization operates in two modes. In scheduled
mode, Time Synchronization is automatically initiated as a scheduled task by
Windows NT every day at 12:00 noon GMT. In manual mode, the utility can be
initiated by clicking on a desktop icon on the file server.
3.1.5.2 File Server Data Backup
Portions of the File Server data drive (D:) will be backed up periodically to a PC
Hard Card. The dataset backup, which can be a full or incremental backup
scheme, will occur no later than one week apart. Initial data backup operations
will require crew intervention.
3.1.5.3 Printing
Documents may be printed to an Epson Stylus 800 color printer, which will be
cabled to the File Server’s parallel port after Mission 2R. After Mission 5A, the
printer will be connected to the OPS LAN backbone and addressed through a
unique IP address (see Proprietary Table E-2 OPS LAN ASSIGNED NETWORK
PARAMETERS). There are no plans to configure the File Server as a print server.
Driver software for the Epson Stylus 800 is already contained in every SSC
Client’s load.
3.1.6 Hosting Crew Support Applications
Through the SSC Client load, the crew will be provided many general support
applications. This will include office automation utilities (i.e., word processing,
spreadsheet, etc.) and unique situational awareness tools (i.e., Worldmap,
PingMaster, etc.). For the latest information regarding software manifest details,
consult the Manifest and Usage Information link (See Appendix B.4).
3.1.7 Web-based Services Support
The OPS LAN File Server operates Microsoft’s Internet Information Server (IIS),
which hosts interlinked web pages. These web pages, called virtual directories,
provide a graphical, user-friendly approach to organizing and accessing time-
sensitive information. The following virtual directories are in use.