On 08/21/12 21:21, Justin Kelly wrote: > I'm sure someone will ask this soon enough
I've had about 20 emails and tweets so far... > Is there any chance that tarsnap could be used with Amazon Glacier? > - Assuming I very rarely want to restore files > > Why: At $.01 per GB per month its very cheap and if I'm only even going to > restore if there is a real disaster it + tarsnap looks to suit my needs Short answer: Not right now. Longer answer: At some point in the future it *may* be possible to mark archives as "frozen", resulting in bits ending up in Amazon Glacier and your storage costs going down. There's a lot of work which would have to go into that, though -- Tarsnap's deduplication makes that sort of thing far more complicated since translating "I won't need *this archive* any time soon" into "tarsnap can move *these bits* into cold storage" is not at all trivial. Also, the back-end storage costs aren't the only factor in determining Tarsnap's pricing -- there's significant work in translating Tarsnap protocol requests into Amazon S3 requests (and if Tarsnap used Glacier, there would be even more for the server code to keep track of) -- so you wouldn't see $0.01/GB for the cold-stored bits; most likely it would be somewhere in the $0.03 - $0.05 / GB range. I'm going to be writing a blog post about some of these details and will mention it here when it's ready. -- Colin Percival Security Officer Emeritus, FreeBSD | The power to serve Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
