Arq

Arq is super-easy online backup for the Mac. Back up to your own Google Drive storage (15GB free storage), your own Amazon Glacier ($.01/GB per month storage) or S3, or any SFTP server. Arq backs up and faithfully restores all the special metadata of Mac files that other products don't, including resource forks, ACLs, and creator codes.

Arq works like Time Machine, except you don't have to remember to plug in your external hard drive. Following the initial backup, Arq automatically makes incremental backups every hour, every day, uploading just the files that have changed since your last backup. Arq keeps hourly backups for the past 24 hours, daily backups for the past month, and weekly backups for everything older than a month.

Arq lets you set a budget for storage, and it automatically drops the oldest backups to keep within the budget.

Arq backs up everything with no limits. It backs up files of any size, external drives, and network drives.

Arq compresses and "de-duplicates" your backups, never storing the same file twice in the cloud. Arq encrypts all your backups with a password that never leaves your computer, so no one can read your cloud backups.

You can back up to multiple "targets". Back up some files to Glacier, some to S3, some to an SFTP server, etc. You can also back up to Amazon, GreenQloud, DreamObjects, Google Cloud Storage, or any other S3-compatible service. Additional plans, which include storage and additional features, are available.

Take control of your Mac's backups with Arq!

New Features

• "Thinning" backups (keeping hourly backups for the past 24 hours, daily backups for the past month, and weekly backups after that) is now optional. Check "Thin backups" in Arq's preferences to enable it.
• New users will now be prompted to select bucket name and region if choosing AWS or Google Cloud Storage.

Fixed Issues

• If Amazon Cloud Drive returns 400 'Cannot read from request' error, try again.
• If a 500 error occurs during reading pages of Amazon Cloud Drive folder listing, restart the folder listing to ensure correct results.
• Clear Amazon Cloud Drive cache when reloading object set (before validating data).
• Fixed an issue which caused erroneous "unknown enforcement error" message.
• Fixed the incorrect edit-destination view for OneDrive.
• Fixed an issue where the log level for Arq.app would change to Debug on startup.
• Fixed a crash that sometimes occurs when Arq first starts up and loads a cached Google Drive folder list.
• Fixed an issue with Amazon Cloud Drive caching which can cause "error " errors.
• If duplicate items with the same name in the same folder in Google Drive are found, keep the newest one.
• Added a workaround to detect and merge duplicate items in Google Drive.
• Fixed an issue where Arq wasn't prompting to re-authorize if Amazon Cloud Drive access was revoked.
• Fixed an issue where cached Google Drive data would cause not-found errors when removing and re-adding Google Drive as a destination.
• Fixed an issue where the status message from the agent wasn't always being sent to the Arq app.
• Stopped excessive logging of Amazon Cloud Drive folder results when log level is set to Debug.
• If Amazon Cloud Drive returns a 409 (node "concurrently modified") error, retry.
• Don't log SFTP authentication failures as errors as we try multiple authentication methods.
• Fixed issues with excessive memory usage with Amazon Cloud Drive.
• Removed the unreliable "Send Bug Report" and "Request Support" app menu items, prompting the user to send email instead.
• Sort the "View Items Being Backed Up" window's items in a separate thread to improve app responsiveness.
• Migrate Amazon Cloud Drive objects to subdirectories to avoid potential API issues if there are too many items in 1 directory.
• Improved Amazon Cloud Drive cache efficiency.
• Improved OneDrive cache efficiency.
• If backup schedule is set to manual, do not do data validation/budget enforcement either.