Re: [PATCH #repost] SCSI: megaraid, fix suspend/resume sections

[Zan Lynx <zlynx@acm.org>]

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On Thu, 2008-05-01 at 15:30 -0700, Andrew Morton wrote:
[cut] 
> > CONFIG_HOTPLUG is only settable to 'n' if you're CONFIG_EMBEDDED which
> > has a zero set intersection with the users of megaraid, so in practical
> > terms, there's no actual box it could kill.
> 
> who suspends and resumes servers?

I read an article not long ago about a guy running an AMD renderfarm.
He was working on power management techniques, including suspending
systems that weren't in use.  It made a huge difference in power costs,
apparently.

I believe suspend is also used in some virtual server farms where
physical systems are resumed and virtuals are migrated to satisfy higher
CPU demands.

I could also see using it combined with a load balancer or proxy to
bring up backup web or database servers.

Compared to using networked/USB power bars or management controllers to
bring systems up and down, suspend/resume provides a faster response.
-- 
Zan Lynx <zlynx@acm.org>

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