Internal Datastore backups

[Bartek Bargiel]

I'm curious if Google does perform any internal backups of the Datastore content?

[Joakim]

I'm not Google, but at least data in the HRD is always written to at least three data centers, synchronously. Details on this: http://www.youtube.com/watch?v=xO015C3R6dw

[Bartek Bargiel]

Thanks. Exactly, that's what I was aware of - we can think of it as a backup of the *current* data. But I was wondering if there's any form of a backup for the data from the past. I don't actually need it but I'd like to know if it's present.

[Barry Hunter]

Remember replication is not the same as a backup. 

A programing or human error, either by you and your app, or by google, (or even a mistake by your users) could potentially still erase data (even if that is just overrighting with gibberish) 

So it can still be useful to backup. 

For this purpose Google does provide facilities to perform backups...

https://developers.google.com/appengine/docs/adminconsole/datastoreadmin

If there are internal backups, you dont know about them, so can't rely on them. If want backups, do them yourself. Can do them on a schedule. 

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