Archiving and backup (DiskXtender)
A lot of my customer cannot distinguish between archiving and backup. They think archiving is the same as backup as well as safe them space on primary storage. This is wrong. Archiving is a process of moving inactive or infrequently accessed data from primary storage to other cheaper storage. For example, moving from a lun of Symmetrix to Centera. If settings in Centera are correct, it can reduce duplication of data being saved on the target. Backup will save a secondary copy of information. Archive only moves the data to another storage media. You still have only one copy of the data. Use EMC DiskXtender as an example, if files are moved to secondary media and rules are setup properly, files that were moved to secondary storage can now be purged from the primary storage and leave a shortcut on the primary storage. The shortcut contains info about the location of the file in the secondary storage. When you click on it, the program will fetch the file back from secondary storage. You ca...