![]() DigitalOcean Spaces has the lowest bandwidth cost (1TB free per account and $0.01/GB additionally) among those who charge bandwidth fees. The storage cost starts at $5 per month for 250GB and $0.02 for each additional GB. $ duplicacy prune -keep 0:360 # Keep no snapshots older than 360 daysĭigitalOcean Spaces Storage URL: Spaces is a s3-compatible cloud storage provided by DigitalOcean. $ duplicacy prune -keep 30:180 # Keep 1 snapshot every 30 days for snapshots older than 180 days $ duplicacy prune -keep 7:90 # Keep 1 snapshot every 7 days for snapshots older than 90 days Because of this, the strategy shown in the documentation for the prune command can be shortened to the following without incurring additional charges: # Keep all snapshots younger than 90 days by doing nothing Wasabi’s 90-day minimum for stored data means there is no financial incentive to reduce utilization through early pruning of snapshots. The wasabi backend uses Wasabi’s rename operation to avoid these extra charges. If the file goes away and all snapshots that contained it are pruned on day 50, renaming the chunks will create an additional 1 GB of objects with a newly-started 90-day clock at a cost of $0.0117. For example, if a new 1 GB file is backed up in chunks on day 1, the initial storage will incur fees of at least $0.0117 (three months at $0.0059 each). S3-style renaming with Wasabi will incur additional charges during fossilization becasue of the additional objects it creates. Because S3 does not support renaming objects, Duplicacy’s s3 backend does the equivalent by using S3’s copy operation to create a second object with the new name then deleting the one with the old name. Wasabi’s billing model differs from Amazon’s in that any object created incurs charges for 90 days of storage, even if the object is deleted earlier than that, and then the monthly rate thereafter.Īs part of the process for purging data which is no longer needed, Duplicacy renames objects. Use the wasabi backend for it to be handled properly. The s3 storage backend renames objects with a copy and delete which is inexpensive for AWS but more expensive for Wasabi. It is well-suited for storing backups, because it is much cheaper than Amazon S3 with a storage cost of $0.0059/GB/month (see note below), and no additional charges on API calls and download bandwidth (max egress allowance is equal to storage size). Wasabi is a relatively new cloud storage service providing a S3-compatible API. Note that us-west-1 additionally has the region in the host name but us-east-1 does not. There is another backend that works with S3 compatible storage providers that require V2 signing: Storage URL: region is the storage region, bucket is the name of the bucket and path is the path to the top of the Duplicacy storage within the bucket. ![]() Minio-based S3 compatiable storages are also supported by using the minio or minios backends: (without (with TLS) ![]() You’ll need to input an access key and a secret key to access your Amazon S3 storage. The actual storage folder will be the path specified in the storage url relative to the Apps folder.Īmazon S3 Storage URL: s3:///bucket/path/to/storage (default region is (other regions must be specified) ![]() Dropbox will generate the refresh token which you then supply to Duplicacy. Otherwise, Synology’s customized SFTP server may terminate the connections arbitrarily leading to frequent EOF errors.ĭropbox Storage URL: dropbox://path/to/storageįor Duplicacy to access your Dropbox storage, you must provide a refresh token that can be obtained by authorizing Duplicacy to access its app folder inside your Dropbox by following this link. ![]() If the SFTP server is a Synology NAS, it is highly recommended to use the absolute path (the one with double slashes) in the storage url. That is, if the ssh private key file is ‘mykey’, Duplicacy will check if the signed certificate can be loaded from the file ‘mykey-cert.pub’. Public key authentication with signed certificate is also supported. You can set up SSH agent forwarding which is also supported by Duplicacy. Login methods include password authentication and public key authentication. SFTP Storage URL: (path relative to the home (absolute path) Local disk Storage URL: /path/to/storage (on Linux or Mac OS X) Duplicacy currently supports local file storage, SFTP, WebDav and many cloud storage providers. ![]()
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