[SunRescue] recommendations: IPX or SS-2?

[Gregory Leblanc]

> -----Original Message-----
> From: bobk [mailto:bobk at sinister.com]
> Sent: Thursday, February 03, 2000 10:10 AM
> To: rescue at sunhelp.org
> Subject: Re: [SunRescue] recommendations: IPX or SS-2?
> 
> On Thu, 3 Feb 2000, Matthew Haas wrote:
>
> 2) You can fit two drive in it, and it will still run cooler than a
> single-drive IPX. This is borne out by experience. I would 
> suggest using
> 5400 RPM drives instead of 7200 RPM drives for heat reasons, 
> unless you
> are at a well-cooled facility. Even then, the speed vs. 
> reliability due to
> heat generation comes in to play.

This is kind of silly.  7200RPM drives are not inherently hotter than
5400RPM drives.  If you look at the first 5400RPM drives that came out, such
as some of the early Seagate HAWK drives, they are just as hot as the early
7200RPM drives.  If you compare some of the 5400RPM drives made 2 years
later to the 7200RPM drives made two years after that speed was introduced,
they're pretty close to the same running temperature.  Heat reductions are
part of the evolution of drives, and I expect that before too long 10K RPM
drives will be cool enough for use in Pizza Box SPARCs.  
	Greg