content_image/976274.jpg
## 5.4 High availability and DR configurations 

## 5.4.1 Example grid configurations 

A few examples of grid configurations are described in this section. 

These examples are a small subset of possible configurations, and are only provided to show how the grid technology can be used. With up to eight cluster grids, many more ways to configure a grid might exist. 

## Two-cluster grid 

With a two-cluster grid, you can configure the grid for DR, high availability, or both. Configuration considerations for two-cluster grids are described next. The scenarios that are presented are typical configurations. Other configurations are possible, and might be better suited for your environment. 

## DR configuration 

This section provides information that is needed to plan for a TS7700 2-cluster grid configuration to be used specifically for DR purposes. 

A natural or human-caused event made the local site’s cluster unavailable. The two clusters are in separate locations, which are separated by a distance that is dictated by your company’s requirements for DR. The only connections between the local site and the DR site are the grid interconnections. No host connectivity exists between the local hosts and the DR site cluster. 

Figure 5-1 shows this configuration. 

<img src='content_image/976274.jpg'>

