I would suggest looking at articles that focus on laptop power consumption, they typically have a section dedicated to disk accesses and how to spin the disk down as much as possible since this has traditionally been one of the better ways to minimize power consumption on a laptop.
This article has some good tips - especially relating to processes that might be accessing the disk frequently http://www.spencerstirling.com/computergeek/powersaving.html
--Blake
-------- Original Message -------- Subject: [CentOS] Minimising disk I/O From: Keith Roberts keith@karsites.net To: CentOS mailing list centos@centos.org Date: Monday, November 29, 2010 9:50:04 AM
I'd like to get disk I/O down to a minimum for my new Centos 5.5 installation.
The machine will not be used as a web server anymore, as that's now hosted on a cloud platform. So there are no HTTP requests coming down the line.
If I move the SWAP partition and /var/log/ to a small spare drive, and install Centos on the new larger drive, is there anything else that would cause disk activity on the main drive, when the machine is running but not in use?
fetchmail will be collecting my email hourly, but I'd like the drive to spin down and go into hibernate mode if possible.
I have a backup drive that gets woken up once an hour to backup email, and also during the night to make backups of specified directories every 24 hours.
Apart from that, the drive is not in use, unless I run a backup script manually.
So I'm hoping to do the same for the main drive if that's posible?
Kind Regards,
Keith Roberts