 |
 |
I think we have a winning idea here. Thanks. Josh Welker -----Original Message----- From: Code for Libraries [mailto:[log in to unmask]] On Behalf Of Randy Fischer Sent: Friday, January 11, 2013 3:46 PM To: [log in to unmask] Subject: Re: [CODE4LIB] Digital collection backups On Fri, Jan 11, 2013 at 2:45 PM, Joshua Welker <[log in to unmask]> wrote: > Reading the Glacier FAQ on Amazon's site, it looks like they provide > an archive inventory (updated daily) that can be downloaded as JSON. I > read some users saying that this inventory includes checksum data. So > hopefully it will just be a matter of comparing the local checksum to > the Glacier checksum, and that would be easy enough to script. > > One could also occasionally spin up local EC2 instances to do the checksums in the same data center, and ship just that metadata down - you would not incur any bulk transfer costs in that case (if memory serves). DAITSS uses both md5 and sha1 checksums in combination, other preservation systems might require similar. -Randy Fischer