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A comment on Amazon Glacier. Parent comment

Re:Amazon Glacier by jordibunster on Tuesday August 21, 2012 @01:20PM (#4413645)
I think the key here is not to just provide a toggle for using Glacier instead of S3, but to have the historical snapshots migrated to Glacier from S3 and deleted every 90+ days.

I will gladly pay more money for Arq again.

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Re:Amazon Glacier by sreitshamer on Tuesday August 21, 2012 @01:51PM (#4413819)
I think it would be more like choosing Glacier instead of S3 on a per-folder basis.

Arq is incremental backup. The data structure is similar to git's http://www.haystacksoftware.com/arq/s3_data_format.txt

Unless your files change a lot, keeping the latest backup version in S3 and previous versions in Glacier would mean that most of your backup data are still in S3 I think. Right?

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Re:Amazon Glacier by sintaks on Wednesday August 22, 2012 @01:52AM (#4416218)
Yes. The forthcoming S3 Lifecycle Policy API additions should allow for exactly this, automatically.
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