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+A handy alternative to the default [[backend|backends]] is the
+SHA1 backend. This backend provides more git-style assurance that your data
+has not been damaged. And the checksum means that when you add the same
+content to the annex twice, only one copy need be stored in the backend.
+
+The only reason it's not the default is that it needs to checksum
+files when they're added to the annex, and this can slow things down
+significantly for really big files. To make SHA1 the default, just
+add something like this to `.gitattributes`:
+
+	* annex.backend=SHA1