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+# Data-mover
+
+Data-mover is a tool to move data between Puhti and Mahti local filesystems and
+Allas and LUMI-O object storage servers, when
+[simple transfers](../faq/how-to-move-data-between-puhti-and-allas.md#move-data-with-rclone)
+are not practical, either because there are many small files, or the size of the
+dataset is large.
+
+We wish the data-mover tool `data-mover` to be simple to use, and handle all possible
+hard corner cases. It is basically a wrapper around [Restic backup tool](https://restic.readthedocs.io)
+, and stores the data in Restic repository format.
+Restic (as used by data-mover) in turn uses [Rclone](https://rclone.org) backend for the actual data transfers to
+the object storage servers and back. In addition, the data-mover tool does the
+data transfers in the background, using batch jobs, allowing larger transfers
+than would be practical in regular interactive login sessions.
+
+## Simple example case, moving data from Puhti to Allas and back
+
+Below is a guide for a simple scenario, moving data from Puhti project scratch
+directory to corresponding project in Allas, and then back. Similar works with
+Mahti and LUMI-O. Please have a look at `data-mover help` and `data-mover <sub-command> --help`
+for additional documentation.
+
+### Setting up the connection from Puhti to Allas
+
+1. Your CSC project needs to have Allas service enabled. The project PI can add
+Allas service for the project in [my.csc.fi](https://my.csc.fi) , if not already enabled, and
+the project members need to [accept the service terms](../../accounts/how-to-add-service-access-for-project.md).
+
+2. Create a configuration for rclone and store the authentication token in the
+file `$HOME/.config/rclone/rclone.conf` in Puhti. This is easiest to do from
+[Puhti web interface](https://puhti.csc.fi). Open "Cloud storage configuration" from the
+"Tools" drop-down menu, and
+[create Allas S3 rclone configuration for the project](../../computing/webinterface/file-browser.md#accessing-allas-and-lumi-o).
+
+4. Open a terminal to Puhti, and take the data-mover tool `data-mover` into use with
+```
+module load .data-mover
+```
+
+### Moving a single directory in Puhti to Allas
+
+1. Delete all the files that are not needed from the scratch directory,
+`/scratch/project_<projid>/exampledir`, for example. There is no need
+to compress the files.
+
+3. Move the data to Allas
+```
+data-mover export /scratch/project_<projid>/exampledir
+```
+
+3. Check the status of the data transfer with
+```
+data-mover status
+```
+
+### Listing the data in Allas
+
+```
+data-mover list
+```
+
+### Moving data from Allas to Puhti
+
+Import data back to the original directory with
+```
+data-mover import /scratch/project_<projid>/exampledir
+```
+
+## Links to related material
+
+- [Lue tool for data inventory](lue.md)
+- [Data cleaning](clean-up-data.md)
+- [Allas introduction](../../data/Allas/introduction.md)
diff --git a/docs/support/tutorials/index.md b/docs/support/tutorials/index.md
index bed52f3db6..536c931f3b 100644
--- a/docs/support/tutorials/index.md
+++ b/docs/support/tutorials/index.md
@@ -3,7 +3,6 @@
 ## General
 * [Getting started with supercomputing at CSC](hpc-quick.md)
 * [Getting started with Helmi](../../computing/quantum-computing/helmi/helmi-from-lumi.md)
-* [Managing data on Puhti and Mahti scratch disks](clean-up-data.md)
 * [CSC Quick reference (pdf)](../../img/csc-quick-reference/csc-quick-reference.pdf)
 * [Linux basics for CSC](env-guide/index.md)
 * [Interactive and batch job hands-on in Puhti](cmdline-handson.md)
@@ -11,10 +10,14 @@
 * [Developing scripts remotely](remote-dev.md)
 * [Using CSC HPC environment efficiently](https://csc-training.github.io/csc-env-eff/)
 * [How to run existing containers in Puhti](../../computing/containers/run-existing.md)
-* [Getting disk usage using Lue](lue.md)
 * [Running Julia jobs on Puhti and Mahti clusters](julia.md)
 * [Using Python on CSC supercomputers](python-usage-guide.md)
 
+## Data management 
+* [Managing data on Puhti and Mahti scratch disks](clean-up-data.md)
+* [Getting disk usage using Lue](lue.md)
+* [Moving large datasets to Allas](data-mover.md)
+
 ## Installation of tools on supercomputers
 * [Installing software with Spack](user-spack.md)
 * [Building Singularity containers from scratch](singularity-scratch.md)