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+.. SPDX-License-Identifier: CC-BY-SA-2.0-UK
+
+Conserving Disk Space
+*********************
+
+Conserving Disk Space During Builds
+===================================
+
+To help conserve disk space during builds, you can add the following
+statement to your project's ``local.conf`` configuration file found in
+the :term:`Build Directory`::
+
+   INHERIT += "rm_work"
+
+Adding this statement deletes the work directory used for
+building a recipe once the recipe is built. For more information on
+"rm_work", see the
+:ref:`rm_work <ref-classes-rm-work>` class in the
+Yocto Project Reference Manual.
+
+Purging Duplicate Shared State Cache Files
+==========================================
+
+After multiple build iterations, the Shared State (sstate) cache can contain
+duplicate cache files for a given package, while only the most recent one
+is likely to be reusable. The following command purges all but the
+newest sstate cache file for each package::
+
+   sstate-cache-management.sh --remove-duplicated --cache-dir=build/sstate-cache
+
+This command will ask you to confirm the deletions it identifies.
+
+.. note::
+
+   The duplicated sstate cache files of one package must have the same
+   architecture, which means that sstate cache files with multiple
+   architectures are not considered as duplicate.
+
+Run ``sstate-cache-management.sh`` for more details about this script.
+