sdd is Shut Down Daemon It is a Linux service to shut down a server down as soon as it can (to save power). Restarting the server (wakeonlan etc.) is not covered in this document. TYPICAL USAGE A home NAS which is turned on when needed, manually or by wakeonlan but should shut down automatically when no users are using it any more. HDPARM hdparm is a very useful tool under Linux with which hard drives can be configured and monitored. Set hard disk spindown with hdparm: hdparm -S or with /etc/hdparm.conf /dev/sdb { spindown_time = 240 } See man page for hdparm for details of spindown_time. See example config.yml file for configuration options, or application help: sdd --help INSTALLATION To install this module, run the following commands: perl Makefile.PL make make test make install For Debian/Ubuntu: Copy examples/etc/sdd.conf to your /etc directory and modify it for your system Copy examples/init.d/sdd to your /etc/init.d directory and run update-rc.d sdd defaults SUPPORT AND DOCUMENTATION https://github.com/robin13/sdd LICENSE AND COPYRIGHT Copyright (C) 2011 Robin Clarke This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License. See http://dev.perl.org/licenses/ for more information.