HP UX SNAplus2 manual Client/Server Configuration, Figure D-2 LU Pools

Figure D-2 LU Pools

Client

Using SNAplus2 in a High Availability Environment

SNAplus2 High Availability Features

Client Client Client

LAN

LU Pool A

S800

Server

S800 Server

3xxx

Communications

Controller

IBM

Host

The LU pool gives you the ability to add a logical layer on top of the two servers. Clients access the SNA network by referring to the LU pool name, not to a specific LU in the pool. Within the SNAplus2 configuration above, the LU pool contains LUs associated with two LSs

—one for each S800 server. SNAplus2 automatically allocates an available LU from the pool when you request it. In this way, high availability is built into the network with redundant port s. If one port fails, or if one of the servers fail, SNAplus2 will continue to function through the other server.

Client/Server Configuration

SNAplus2 can be configured in either a standalone or client/server configuration. The standalone configuration requires SNAplus2 applications to run on the same system that has the SNAplus2 Link installed. The client/ server configuration provides an important benefit

Appendix D 359