Educause Security Discussion mailing list archives
Re: How much does disk encryption add to boot time?
From: Alan Amesbury <amesbury () OITSEC UMN EDU>
Date: Fri, 4 May 2007 15:01:09 -0500
David A Lundy wrote:
We don't have experience here, but the figures I heard from the SANS Conference on Disk Encryption last week was typically about a 3% impact overall. While it could be more at boot time because that is disk bound, it didn't seem to be a problem to the organizations presenting their experiences.
In other words, it's *hours* if the system initially took that long to boot. :-) Under FreeBSD using GEOM, the difference is unnoticeable. FileVault under Mac OS X also has a negligible perception on performance. Personal experience with PointSec back in '03 and early '04 was bad; the system had a tendency to get slower over time, too. However, I've heard that current versions of that product work just fine, and one of the units here reports slowdowns comparable to that 3% number. The biggest impact will be on disk-intensive tasks, so you probably want to avoid using disk encryption for tasks like video editing, unless you really need that sort of protection. -- Alan Amesbury OIT Security and Assurance University of Minnesota
Current thread:
- How much does disk encryption add to boot time? David Millar (May 02)
- <Possible follow-ups>
- Re: How much does disk encryption add to boot time? Roger Safian (May 02)
- Re: How much does disk encryption add to boot time? Pace, Guy (May 02)
- Re: How much does disk encryption add to boot time? George Bailey (May 02)
- Re: How much does disk encryption add to boot time? Matthew Gracie (May 02)
- Re: How much does disk encryption add to boot time? Jordan Wiens (May 02)
- Re: How much does disk encryption add to boot time? David A Lundy (May 02)
- Re: How much does disk encryption add to boot time? Alan Amesbury (May 04)
- Re: How much does disk encryption add to boot time? Cal Frye (May 04)