On 04/14/2011 03:47 PM, Daniel Itaboraí wrote: > - > > Crash Proof durability (not having to replicate to achieve durability as > a best practice) MongoDB will not become crash-proof just by migration. If your cluster goes down together, for example by power failure in the datacenter, you can end up all your nodes corrupted.
Since v1.7.5 it can be run with journaling, however you should read this page before you decide: http://www.mongodb.org/display/DOCS/Journaling "Can I use the journaling feature to perform safe hot backups? Not yet, as the journal files are rotated out (unlinked) after data is safely in the data files." "MongoDB may determine that it is faster to preallocate journal files than to create them as needed. If MongoDB decides to preallocate the files, it will not start listening on port 27017 until this process completes, which can take a few minutes. This means that your applications and the shell will not be able to connect to the database immediately on initial startup." Mage
