Add doc about moving datasets

website/docs/triplestore/index.md

@@ -51,3 +51,4 @@ services:
 
 - [Migrating datasets](migrating-datasets)
 - [Compacting datasets](compacting-datasets)
+- [Moving datasets](moving-datasets)

website/docs/triplestore/moving-datasets.md

@@ -0,0 +1,11 @@
+---
+title: Moving datasets
+---
+
+Fuseki use [sparse files](https://wiki.archlinux.org/title/Sparse_file) to store datasets. Basically it means datasets appear to take more space than what they are really taking.
+
+If you want to move them to another server, you will need to ensure whatever method you use will take this into account, otherwise you may find yourself with 20-30 times more data than you initially had.
+
+For example the `tar` tool has a `-S` option which will look if the files to compress are sparse files and, in that case, only bring into the archive the "real" part of the file. More information [here](https://www.gnu.org/software/tar/manual/html_node/sparse.html).
+
+The `rsync` tool has a similar `-S` option which do the same. More information [here](https://gergap.wordpress.com/2013/08/10/rsync-and-sparse-files/).

website/sidebars.js

@@ -175,7 +175,12 @@ module.exports = {
     'frontend/list-components',
     'frontend/markdown-components'
   ],
-  triplestore: ['triplestore/index', 'triplestore/migrating-datasets', 'triplestore/compacting-datasets'],
+  triplestore: [
+    'triplestore/index',
+    'triplestore/migrating-datasets',
+    'triplestore/compacting-datasets',
+    'triplestore/moving-datasets'
+  ],
   contribute: {
     'SemApps core': ['contribute/code', 'contribute/coding-conventions'],
     Documentation: ['contribute/documentation', 'contribute/style-guide']