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@@ -179,7 +179,7 @@ It is unclear if lack of cloud storage is due to difficulties in porting the loc
Concurrent access is not only a convenience; it is a Concurrent access is not only a convenience; it is a
necessity for better deduplication. For instance, if multiple machines can back up their entire drives to the same storage, only one copy of the same OS files can be stored, greatly reducing the storage space regardless of the number of machines. Attic still adopts the traditional approach of using a centralized indexing database to manage chunks, and relies heavily on caching to improve performance. The presence of locking makes it hard to be adapted for cloud storage APIs and prevents concurrent access. necessity for better deduplication. For instance, if multiple machines can back up their entire drives to the same storage, only one copy of the same OS files can be stored, greatly reducing the storage space regardless of the number of machines. Attic still adopts the traditional approach of using a centralized indexing database to manage chunks, and relies heavily on caching to improve performance. The presence of locking makes it hard to be adapted for cloud storage APIs and prevents concurrent access.
[restic](https://restic.github.io) is a more recent addition to the long list of backup tools. It is worth mentioning here because like Duplicacy, it is written in Go. Like bup, it uses a format similar to the git packfile format, but not exactly the same. Multiple clients backing up to the same storage is still guarded by [restic](https://restic.github.io) is a more recent addition to the long list of backup tools. It is worth mentioning here because like Duplicacy, it is written in Go. Like bup, it uses a format similar to the git packfile format, but not exactly the same. Multiple clients backing up to the same storage are still guarded by
[locks](https://github.com/restic/restic/blob/master/doc/Design.md#locks). [locks](https://github.com/restic/restic/blob/master/doc/Design.md#locks).
A command to delete old backups is in the developer's [plan](https://github.com/restic/restic/issues/18). S3 storage is supported, although it is unclear how hard it is to port it to other clould storage APIs because of the use of locks. Overall, it still falls in the same category as Attic and whether not no it will become superior to Attic is at best questionable. A command to delete old backups is in the developer's [plan](https://github.com/restic/restic/issues/18). S3 storage is supported, although it is unclear how hard it is to port it to other clould storage APIs because of the use of locks. Overall, it still falls in the same category as Attic and whether not no it will become superior to Attic is at best questionable.