Each backup server communicates directly and independently with the Enterprise Option for StorageTek ACSLS. Although multiple backup servers may exist on the same network, Arcserve Backup servers do not communicate with other backup servers unless they are in a SAN.
Note: For more information about using Arcserve Backup in a SAN, see the Administration Guide.
The communication interfaces between the StorageTek ACSLS tape library and the Arcserve Backup server consist of an Ethernet LAN control path and a (SCSI) Small Computer System Interface or fibre channel data path. The control path and the data path are two different paths.
The StorageTek ACSLS Library Attach software on the Arcserve Backup server is connected to the StorageTek ACSLS library through an Ethernet LAN control path. The StorageTek Library Attach software sends library requests over the Ethernet LAN control path directly to the ACSLS Manager software on the StorageTek ACSLS server.
Note: You can verify the network connectivity between the Arcserve Backup server and the StorageTek ACSLS tape library by using the StorageTek Library Attach software.
Each Arcserve Backup server is independently connected to one or more tape drives in the StorageTek ACSLS tape library through SCSI or fiber channel data paths. The Arcserve Backup server reads and writes data on tape volumes in the tape library managed by StorageTek ACSLS by interacting directly with tape drives through the SCSI or fibre channel data path. In SAN configurations, the Arcserve Backup servers are connected to the SAN that is connected to the StorageTek ACSLS tape drives.
The following configurations support fibre attached tape drives:
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