![]() The actual backup data is either directly transferred to backup device (NDMP 2-way) or through private backup network (NDMP 3-way), by the NAS head. In this backup operation, NDMP uses the production network only to transfer the metadata. In IBM TSM, the agent software is referred as TSM Storage Agent. ![]() This will reduce the load on the LAN and it will use the FC SAN technology to deploy a robust high performance backup environment without having to deploy a dedicated backup LAN. The backup data is then sent directly to the tape library over the SAN rather than the LAN. The backup server tells the agent software on the backup client to perform a backup to the tape library backup target. In order to achieve this, you need a agent software that can talk directly to a tape library. In this backup method, the client being backedup has direct connectivity to a SAN-based tape library through FC medium. If you have large data to be back up and you have small backup window, LAN-free backup method can be used to finish the backups within backup window. LAN-free backups offers high performance and reliability but at a higher cost. Unlike LAN-based backups, a LAN-free backups uses SAN infrastructure (FC Channel) to send the backup from the host to the storage media. Doing this helps ensure that the backup is a good backup and will be useful as an image to restore from. Additionally, most good applications that support hot backups have robust facilities to perform checksums, application-based integrity checks, and verification’s of backup images. Another matter of extreme importance in the world of hot backups is the ability to perform integrity checks against backups. Quite often, snapshot technologies, including array-based snapshot technologies, are utilized as part of the PIT frozen image creation process. This frozen image is then used for the backup. To provide this hot-backup feature, most applications place themselves into a hot-backup mode and utilize some form of point-in-time (PIT) technology that creates a frozen image of application data. IBM TSM offers Tivoli Data Protect for Applications and Databases to take the online/hot backups. Most modern applications, such as Oracle Database, Microsoft SQL Server, Microsoft Exchange Server, Microsoft SharePoint Server, SA and Vmware etc all support hot backups.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |