數據備份程序：Attic

Attic是一個deduplicating備份程序。Attic的主要目的是提供一種有效和安全的方式來備份數據。使用重復數據刪除技術使得Attic適合日常備份，因為只存儲有更改的部分。

易于使用

初始化備份庫，并創建一個備份存檔：

$ attic init /usbdrive/my-backup.attic
$ attic create -v /usbdrive/my-backup.attic::documents ~/Documents

主要特性：

Space efficient storage

Variable block size deduplication is used to reduce the number of bytes stored by detecting redundant data. Each file is split into a number of variable length chunks and only chunks that have never been seen before are compressed and added to the repository.

Optional data encryption

All data can be protected using 256-bit AES encryption and data integrity and authenticity is verified using HMAC-SHA256.

Off-site backups

Attic can store data on any remote host accessible over SSH. This is most efficient if Attic is also installed on the remote host.

Backups mountable as filesystems

Backup archives are mountable as userspace filesystems for easy backup verification and restores.

項目主頁：http://www.baiduhome.net/lib/view/home/1416493633930