[dmw_ng]

Where are all the Backblaze marketing folk? :) B2 has an offer at present where they will eat the cost of a one-time S3 egress in exchange for a 1 year storage commitment. This offer is much more transparent, although I do still admire CloudFlare's strategy here.

[corford]

Echoing this. We've just made use of that very offer to shift >2billion objects (120TB) from S3 to B2. Migration took over a month but we weren't billed for any of it and are very happy so far.

[dmw_ng]

Just curious, were you optimising for storage or serving costs, and were the expected savings realized? I've been itching to try live serving out of B2, but its latency jumps around quite a lot, and the hot cache layer does not stream large (>100MB) objects during first fetch, so it's not without some downsides.

[corford]

The objects we moved to B2 are essentially archive material and not expected to be regularly accessed, so it was purely a cost optimisation. We'll be adding another ~50TB per year to B2 so we expect the long term savings to be significant versus leaving these objects in S3. Because of the object count (and per object size), moving them to Glacier was not an option.