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0 pointsac2910y ago0 comments

But its not cheap, which was my point. 100GB of storage costs:

$300/year at tarsnap

$36/year at S3

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Finally, numbers other than picodollars and gigabyte months and unpredictable deduplication. This convinces me I don't want to store 4TB there at a huge cost($12,000 if it's really $300 a year for 100GB) compared to buying two 4TB drives (~€250 per 3-4 years) and placing them at a friend's with free bandwidth.

Don't get me wrong: managed, off-site encrypted backups are very attractive, and I might be willing to pay a premium, especially for software from a trusted person, but not the cost price hundredfold.

patmcc10y ago

Tarsnap isn't intended to be used as one-time backup like that, and it's super expensive if used that way. It's very cheap when used to backup (almost) the same 4GB for 1000 days in a row, which is what a lot of people/businesses need for their backup solutions.

lucb1e10y ago

It's not one time, I'd be incrementally writing updates to the disks. With a raspberry pi or something, the power costs are near negligible.

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stephenr10y ago

Add another $1k to that for data transfer (assuming you only upload that 4tb once)

girvo10y ago

That sort of backup is what AWS Glacier is for, is it not?

lucb1e10y ago

I guess, I haven't really looked at it yet. And I'd have to find my own software to encrypt it before uploading. Tarsnap's software is one of the major selling points, at least to me.

stephenr10y ago

I hate to think the cost if you had to restore that data from glacier though.

tomjen310y ago

How much do you save after dedublication? Tar-snap could be a lot cheaper if you do frequent backups or you often change little in huge files.

ac29OP10y ago

Backup tools like attic (which I use) include automatic deduplication. There are surely minor differences in implementation, but tarsnap isnt the only implementation of deduplicating backup.

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lucb1e10y ago

patmcc10y ago

lucb1e10y ago

It's not one time, I'd be incrementally writing updates to the disks. With a raspberry pi or something, the power costs are near negligible.

1 more reply

stephenr10y ago

Add another $1k to that for data transfer (assuming you only upload that 4tb once)

girvo10y ago

That sort of backup is what AWS Glacier is for, is it not?

lucb1e10y ago

I guess, I haven't really looked at it yet. And I'd have to find my own software to encrypt it before uploading. Tarsnap's software is one of the major selling points, at least to me.

stephenr10y ago

I hate to think the cost if you had to restore that data from glacier though.

tomjen310y ago

How much do you save after dedublication? Tar-snap could be a lot cheaper if you do frequent backups or you often change little in huge files.

ac29OP10y ago

Backup tools like attic (which I use) include automatic deduplication. There are surely minor differences in implementation, but tarsnap isnt the only implementation of deduplicating backup.

j / k navigate · click thread line to collapse