Revise system hardware requirements

Author: stevepiercy

docs/install/install-from-packages.md

@@ -31,16 +31,18 @@ The hardware requirements below give a rough estimate of the minimum hardware se
 A single Plone installation is able to run many Plone sites.
 You may host multiple Plone sites on the same server.
 
--   Minimum 256 MB RAM and 512 MB of swap space per Plone site is required.
+-   Installation of the Plone backend and Classic UI frontend requires a minimum of 256 MB of RAM and 2GB of disk swap space.
+-   Installation of the Volto frontend requires a minimum of 2GB of RAM.
+-   After installation, running Plone requires a minimum of 256 MB RAM and 512 MB of swap space per Plone site.
     2 GB or more RAM per Plone site is recommended.
 -   Minimum 512 MB hard disk space is required.
     40 GB or more hard disk space is recommended.
 
+
 ````{warning}
-When you _build_ Plone, it will approximately double RAM requirements to _install_ Plone.
-{term}`Add-on` products and caching solutions may also increase RAM requirements.
+{term}`Add-on` products and caching solutions may also increase RAM and disk swap space requirements.
 
-To avoid RAM limitations, we recommend either temporarily resizing your remote machine to accommodate the build, or build your images locally and upload them to an image store, such as [Docker Hub](https://hub.docker.com/) or [GitHub Packages](https://github.com/features/packages).
+To avoid RAM and disk swap limitations, we recommend either temporarily resizing your remote machine to accommodate the build, or build your images locally and upload them to an image store, such as [Docker Hub](https://hub.docker.com/) or [GitHub Packages](https://github.com/features/packages).
 
 ```{seealso}
 [How much RAM is required to build a Volto front end?](https://community.plone.org/t/how-much-ram-is-required-to-build-a-volto-front-end/17949) and [Dealing with heap exhaustion while building Volto 17 on limited-RAM host](https://community.plone.org/t/dealing-with-heap-exhaustion-while-building-volto-17-on-limited-ram-host/18078).