EMC CX600 Configuration Guide - Page 141
Local Backup to Remote Tape Drive Using DWDM
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February 3, 2003 EMC CLARiiON Open Systems Configuration Guide Local Backup to Remote Tape Drive Using DWDM This topology uses disk-to-tape backups over a DWDM-based extended Fibre Channel SAN. Local disks are backed up to a tape drive at the remote facility. This type of backup accomplishes the dual-purpose of backing up the disks and placing the backup in a remote location for disaster recovery. It also centralizes tape media handling to one site. A DWDM provides a very high bandwidth, short-distance solution, though it is expensive. This topology is appropriate for organizations that have or will deploy a DWDM-extended SAN to solve data replication challenges. Since DWDM has the same bandwidth as a Fibre Channel, a DWDM-extended SAN is functionally a single FC SAN. By utilizing a fully capable SAN, full backup capabilities are available. Backup and restore servers are more available, duplicate copies of data are available for use, SnapView and MirrorView can be utilized fully, and backup and restores are easily scheduled. Application Server Backup Server Legend Backup Data Backup Control Data SAN DWDM DWDM SAN LUN LUN LUN LUN LUN LUN LUN LUN CLARiiON Storage System Fibre-Channel-to-SCSI Bridge Tape Library Tape Drive Tape Drive Tape Drive LUN LUN LUN LUN LUN LUN LUN LUN CLARiiON Storage System Document Rev 19 Page 141 EMC Confidential
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