Tape no longer holds the place it once did in most firms' backup environments, but most storage shops still rely...
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on it to some degree. Our Snapshot survey finds that while the vast majority of respondents use disk in backup, nearly 40% plan to buy tape gear this year.
You have to search far and wide these days to find a company that's not using disk to some degree in their backup operation. In our latest Snapshot survey, only 6% of respondents said they don't use disk at all for backup. On the flip side, 18% have completely eliminated tape from their backups. Among those companies that do use disk, the methods break down relatively evenly, with many companies using more than one disk-based technology. The most popular way to use disk was simply as a file system that acts as the backup target (53%). Just using disk as a staging area or temporary cache before spinning off to tape was a close second at 49%, while 37% said they use virtual tape libraries (VTLs) for backup. But tape's days are far from numbered despite an apparent overall decline. In fact, 39% of those surveyed said they'll buy tape gear this year, with 55% planning to purchase new libraries. And perhaps more telling evidence about tape's staying power is the 79% of disk-backup users who say that all or some of their backup data eventually finds its way onto tape.
"We would like to implement a disk/VTL solution with dedupe; however, we cannot cost justify it over what we pay for maintenance and tapes." -- Survey respondent
BIO: Rich Castagna (firstname.lastname@example.org) is editorial director of the Storage Media Group.