if you do a daily back up, the backup would be every day. (365 days a year, 366 days once every 4 years). Now, if you want backups to != saturday and sunday, then number of backups a year would = 261 (not 250). If you don't do backups on Thanksgiving, 4th of July, Memorial Day, Easter, New Years, Labor Day, or Christmas. Honestly, we use something also not very cost effective where I work.
we have redundant hard drives on several computers.
Everything is stored actively on both hard drives, but only read off of one in real time (mirroring, sometimes through means of raid, but not always). but it is a fairly good way of backing up. Of course the other problem with active mirroring is that you don't have that ability to go back to a previous version of a file, or recover a file if it has been deleted.Įven more critical computers also backup to DAT every night. Is it a practical alternative to your standard computer tape drives? however, if you have a hardware failure or a data failure (some of our computers only mirror certain directories, not EVERYTHING) it is a good, fast recovery. Longer answer: I'm a film student, I've been working with MiniDV a lot the past few semesters. MiniDV, especially with the cheap ($5!) tapes, is very prone to dropping frames you lose a frame on a good shot and it's an annoyance, but translate that into data backup and it could mean losing a piece of a file.
How much do you value the data you're backing up? If you're bothering to back it up, you probably value it more than that. MiniDV has its flaws as a video format, so much so that Sony and Panasonic have come out with their own formats based on it to correct some of these problems (DVCAM and DVCPRO respectively). And that's what it was designed to do, and it still can't do it well. You can do something the cheap way, or you can do it the right way. People who value their data choose the latter for obvious reasons.
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