Grass Valley Apex v.2.0 - Manual (Page 54)

56 APEX — Installation and Service Manual
Section 2 — Planning Guide
Redundancy
To maximize uptime and reliability, the Apex system can be equipped with
the redundant components described below.
Control Board
A secondary CX-34000 Control Crosspoint board can be installed and con-
figured to assume control if the primary board fails.
Note The configuration switches in both control cards must match to ensure
proper system operation.
Matrix Board
Should the primary MX-34000 Matrix board fail, the secondary board will
take over immediately. The system also employs redundant TDM expan-
sion links between chassis—and connects those links in a fully connected
star topology. This ensures that every chassis is speaking to every other
chassis, eliminating the weak-link pitfalls of serial or daisy-chain topolo-
gies.
Power Supply
All Apex routers will accept an additional PS-34000 power supply that will
operate as a completely redundant unit. That is, one supply can fully
provide enough power to operate the router even under maximum load.
The power supplies of the Apex system are also load sharing so that both
supplies actively supply power at the same time. This approach improves
overall system reliability by lowering the output of each supply. Lowering
the average output of a supply, relative to its maximum, reduces the likeli-
hood of its failure.