Network Infrastructure for SAP
Given that SAP is architected to support a distributed three-tiered design, a slew of configurations exist that can potentially impact high availability. There are similar performance considerations as well, as the database, application, and Web tier layers are all affected. For example, a back-end network is recommended to interconnect the database and the application servers, another network interconnects the application servers to the Web/Internet layers, and a third public network addresses client requirements. If you plan on pulling backups across the network (rather than via a disk subsystem that supports direct-attached SCSI or fibre channel tape drives), a separate back-end network subnet is highly recommended ...
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