What is the difference between RPO and RTO?
Are tape backups a thing of the past in DR? We have seen the use of tape decline rapidly over the past few years. If you had asked me that question a few years ago, I would have said no. But first of all, we need to understand the distinction between DR backup and typical backup. If you’re backing up data in case of data loss, maybe by accidental deletion, tape is somewhat useful and it’s a very low cost media. But when we’re talking about a DR application, what you’re looking for is quick recovery. We’ve been seeing disk really displace tape in the DR arena, especially with deduplication coming into the picture, which obviously is not available on tape today. Deduplication allows you to store a lot more data and potentially replicate it, offsite at a much lower cost. So that’s making tape, from a DR perspective, a lot less attractive than it used to be. Even from a cost perspective, disk has become more and more affordable. So we’re seeing a lot of backup solutions leverage disk as th
