In all servers are connected to the LAN and all storage devices are directly LAN-based backup, attached to the storage node (see Figure 12-8). The data to be backed up is transferred from the backup client (source), to the backup device (destination) over the LAN, which may affect network performance. Streaming across the LAN also affects network performance of all systems connected to the same segment as the backup server. Network resources are severely constrained when multiple clients access and share the same tape library unit (TLU). This impact can be minimized by adopting a number of measures, such as configuring separate networks for backup and installing dedicated storage nodes for some application servers. The is also known as the Figure 12-9 illustrates a SAN-based backup LAN-free backup. backup. The SAN-based backup topology is the most appropriate solution when a backup device needs to be shared among the clients. In this case the backup device and clients are attached to the SAN.
In LAN-based backup, all servers are connected to the LAN and all storage devices are directly attached to the storage node (see Figure 12-8). The data to be backed up is transferred from the backup client (source), to the backup device (destination) over the LAN, which may affect network performance. Streaming across the LAN also affects network performance of all systems connected to the same segment as the backup server. Network resources are severely constrained when multiple clients access and share the same tape library unit (TLU). This impact can be minimized by adopting a number of measures, such as configuring separate networks for backup and installing dedicated storage nodes for some application servers. The SAN-based backup is also known as the LAN-free backup. Figure 12-9 illustrates a backup. The SAN-based backup topology is the most appropriate solution when a backup device needs to be shared among the clients. In this case the backup device and clients are attached to the SAN.