TS7700 Component redundancy overview

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This topic provides an overview of TS7700 component redundancy.

The TS7700 frame components are designed to be redundant to minimize downtime during serviceability and maximize the uptime of the TS7700.

A separate power source for each PDU is highly recommended so that if one power source path is lost to the TS7700, then the TS7700 will continue to operate using power from the other power source.

The following figure shows that the TS7700 hardware is divided into a Primary side and an Alternate side.



Redundancy for the TS7700 hardware components is achieved in three different methods:
  1. The hardware component has built-in redundancy. An example of this is the 3948-CFD/XFD/XSD cache hardware enclosure. Each cache enclosure contains a primary and alternate path and power.
  2. Two of the same hardware components are used for redundancy. An example of this is the Ethernet and fiber switches. The TS7700 contains two of each to ensure that data continues to flow even if one path is lost.
  3. The hardware is put together to provide redundancy. An example of this is the 3948-VEF, in which two adapters are added for each path (GRID, Cloud, external/internal Ethernet, and so on).