Rclone

Cloud storage services each supply their own program, and none of them talks to any of the others. Rclone ignores that arrangement entirely, treating every service as the same kind of thing and moving files between any of them from a command line.

The Rclone list of services runs into the dozens, covering the well-known ones alongside object storage, plain file transfer protocols and anything else that holds files remotely.

Configuration adds each service as a named remote, after which every command refers to those names rather than to whatever the provider calls things.

The verb that empties backups

Here is the thing to understand before running any Rclone command, and it is where the accidents happen.

Copying adds files to the destination and leaves whatever is already there. Synchronising makes the destination match the source, which means deleting anything at the destination that is not at the source.

Those two words are used interchangeably in ordinary speech and they are not interchangeable here. Somebody who means copy and types sync, with the arguments the wrong way round, empties a backup.

The protection is built in and needs using. A dry run prints exactly what would happen without doing any of it, and reading that output before removing the flag is the habit that separates people who use this confidently from people with a story about it.

For the same job with a window and a preview pane, a folder comparison tool that shows the differences before acting makes that check visual.

Encryption that the provider cannot read

This is the Rclone capability that changes what cheap storage is good for.

A remote can be wrapped in an encryption layer, so filenames and contents are encrypted on your machine before upload. What the provider stores is unreadable to them, and what you see when browsing through the tool is your ordinary files.

That decouples the choice of provider from the question of trusting them. Storage becomes a commodity bought on price and reliability, because the provider holds nothing they could read even if they wanted to.

The responsibility that arrives with it is absolute. Lose the passphrase and the data is gone, with no recovery, no reset and nobody to appeal to. Keeping that passphrase somewhere safe is now the single point of failure for everything you stored.

For encrypting things locally rather than in transit to a provider, VeraCrypt creates containers on your own disks.

Moving data between providers without downloading it

One Rclone capability saves an enormous amount of time and most people do not know it exists.

Where both ends support it, a transfer between two remote services happens server to server. The data moves directly between the providers rather than travelling down to your machine and back up again.

For a few files that is a curiosity. For moving two terabytes from one service to another it is the difference between an afternoon and a fortnight, particularly on a home connection where the upload speed is a fraction of the download.

Where a transfer must pass through your machine, resuming matters, and a client that picks up an interrupted transfer where it stopped handles that for the ordinary protocols.

Mounting a remote as a drive

Rclone can present a remote as a drive letter, so ordinary applications see it as storage.

That works and it is not a local disk. Every operation crosses a network, so opening a large file is slow, applications that expect instant seeking behave poorly, and anything writing constantly to the same file will struggle.

The sensible use is reading and occasional writing rather than working directly from it. Editing a video from a mounted remote is a bad afternoon, and browsing an archive from one is entirely reasonable.

It is a command line, and that is the barrier

Being direct about who Rclone suits.

There is no conventional interface. Everything happens through commands with flags, and the capability that makes it powerful, meaning filters, bandwidth limits, scheduling and verification, all arrive as more flags.

That suits somebody comfortable writing a command and putting it in a scheduled task. It does not suit somebody who wants to drag a folder onto a window, and no amount of capability changes that.

For keeping folders matched between machines you own with an interface around it, Resilio Sync does that side without a command line.

Conclusion

Rclone turns storage providers into interchangeable destinations, which is a properly useful way to think about them. One set of commands covers everything, transfers between services skip your connection entirely, and the encryption layer means the provider’s trustworthiness stops being your problem.

Two habits make it safe. Run a dry run before anything that synchronises, every time, because the difference between copy and sync is the difference between adding files and removing them. And treat the encryption passphrase as the most important string you own, since nothing and nobody can recover what is behind it.