The Data Distribution on Media Report is helpful in analyzing all servers within your Arcserve Backup Domain to see how your data is distributed on various types of backup media. From this report you can also determine the amount of savings (backup size) that was gained by compressing your data during backup. By having this knowledge, you can quickly and easily determine how this savings in backup size can also result in a savings of the needed backup resources.
For example, from this report you can see that within your Arcserve Backup Domain, the compressed backup data located on a deduplication device is much smaller in size than the raw backup data would have been. If this report also shows that you have other data that was backed up to a disk (and therefore not compressed), you should consider using more deduplication to improve your backup efficiency. In addition, you can also determine whether you need fewer backup tapes to store your compressed data.
Note: Data that is saved on tapes has no backup size savings unless the tape supports hardware compression. Only data that is compressed and saved on a deduplication device results in a significant backup size savings.
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