THE RECOMMENDED COMPUTERISED DATA HANDLING SYSTEM
It is rather difficult to configure a
typical optimum NMC or RTH computerised data handling system because there are many
constraining variables including the following:
- The national telecommunication infrastructure, which is
expected to provide the communication, links.
- Financial resources to procure and install the hardware
and software and pay for rentals.
- Availability of local technical expertise in hardware and
software to ensure maintenance and progressive future migration.
In addition, there is the difference in
the actual functions between the RSMC/RTH and NMC centres to be found in RA I. For
example, while an RSMC may need the NWP capability to carry out some of its functions a
small NMC may not need that capability. But whatever the functions of an RSMC/NMC are,
they all need an AMSS and a DBMS as a starting point and then add on to it what other
modules are needed to carry out these functions.
BASIC COMPUTERISED GDPS SYSTEM
An AMSS is likely to be the starting
point for many NMCs in RA I. The addition of the DBMS along with the data/products viewing
application- the simplest of the applications- constitutes the foundation, the starting
point on the road to a computerised WMO GDPS. Annex 1 shows the system layout. The
recommended main items for implementing this system which is based on two server systems:
one dual PC Message server system and a second dual PC Data server system are as follows:
- A direct link to the RTH operating at 19 kbps or
higher and using IP (TCP/IP) protocol
- Two type (a) AMSS PCs ( in hot stand by ) Message
- One Router (e.g. Cisco) with:
- one LAN port for 10Base-T
- two WAN ports for speeds up to 64 Kbps
- two WAN cables
- One V34 Modem: (e.g. Telinda Aster)
- One Ethernet Hub: 10Base-T, with 24 ports
- Ethernet Card (NIC) for 10Base-T LAN
- Sundries for LAN: Cables Connectors, Wall boxes, Ducting,
- Two Printers: one colour, one laser black and white.
- Two 650kva UPSs
- Windows 2000 Professional
One complete DBMS as specified in 4.3
3 weeks of intensive hands on training at
system installation time.
TOTAL SYSTEM COST
ESTIMATED AT US $ 40,000 - 50,000
- If satellite systems already exist at the NMC they
should be integrated into system as indicated. One or two additional type (c) PCs will be
required for the reception of MDD and PDUS data. It should however be remembered that
METEOSAT-7 ground receiving equipment will need to be replaced by equipment operating on
the MSG system by 2003.
- There must collaboration between NMC and the next hop on
the link (RTH?) regarding routers and modems.
- Estimated cost excludes links rentals but includes system
installation and training.