I might could add a six-month and one-year backup too. I think I’m pretty well covered for whatever might come up. I also put a drive on the shelf about every two years. I use multiple backup programs (Duplicacy, Carbon Copy Cloner, Arq 5, Backblaze, and even one Time Machine task) to back up to multiple targets (drives that are always attached, drives that live in a drawer and are attached once a month, and SFTP, SMB, and S3-Compatible targets on both my Synology NAS and TrueNAS.) Backup intervals range from hourly to monthly. Using Duplicacy to back up to my TrueNAS system with 8 drives in a RAIDZ2 configuration seems like a safe and reliable system. Thus, deduplication means that the duplicated blocks in the files, whether on the same or different drives, and on the same or different computers, can be saved only once and reused. This large reduction is due to my having multiple copies of the same dataset on the Data drive, and my home folders on my iMac and MBP are largely the same. Not sure where the discrepancy comes from - possibly block size on the ZFS file system. The space occupied on the server (after deduplication and compression) is (401 GiB + 618 GiB + 64 GiB) = 1083 GiB, and checking the folder on the server, it shows 1303 GiB. That’s a total of 2688 GiB being backed up. The Storage is SSH/SFTP running on my TrueNAS 12 CORE server (free) The default is to retain all revisions for 7 days.check - performs an integrity check on the storage.The scheduler allows scheduling backup, check, and prune tasks alone or in combination. The number of simultaneous backup threads can be configured too, as well as the use of snapshots of the repository (source) so that backups which represent a point in time are ensured. Duplicacy stores revisions of backups, which are usually quite small compared to the initial backup, since they only contain changes from the last backup.Īs might be expected, backup sets can be created with files or folders explicitly included or excluded, if desired. The software supports multiple repositories, and multiple storage destinations. ![]() The things you back up are called repositories, and the places you back up to are called storage. The terminology used in the Duplicacy world is a little different.
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