NODE 5338cccbRe: Orbiting Datahavens
jim bell <jimbell@pacifier.com>Sun, 18 Aug 1996 13:50:45 +0800
At 06:32 PM 8/17/96 -0500, snow wrote:
>
> It is just as easy to take out a satelite in LOE as it is to sink an
>oil rig, plus swapping defective Hard Drives is a real bitch.
Hard drives don't work in a vacuum, at least conventional ones don't. (And
I'm not aware of any hard drives which are designed to be permanently
pressurized against a hard vacuum, either...)
Jim Bell
jimbell@pacifier.com
NODE 5e2d1e80Re: Orbiting Datahavens
snow <snow@smoke.suba.com>Sun, 18 Aug 1996 15:13:44 +0800
On Sat, 17 Aug 1996, jim bell wrote:
> At 06:32 PM 8/17/96 -0500, snow wrote:
> > It is just as easy to take out a satelite in LOE as it is to sink an
> >oil rig, plus swapping defective Hard Drives is a real bitch.
> Hard drives don't work in a vacuum, at least conventional ones don't. (And
> I'm not aware of any hard drives which are designed to be permanently
> pressurized against a hard vacuum, either...)
I'll rephrase that then. It is a real bitch to swap out defective hardware
on a satellite.
I don't know much about sats, and I realize that most of them are built
to specs that are insane compared to anything that runs dirtside, but (and I
am sure that someone will correct me if I am wrong) most sats aren't expected
to deal with the wide range of tasks that your average network server deals
with, nor do they have anywhere NEAR the memory capacities that we are talking
about.
Petro, Christopher C.
petro@suba.com <prefered for any non-list stuff>
snow@smoke.suba.com
NODE 8c490fccRe: Orbiting Datahavens
"Douglas R. Floyd" <dfloyd@io.com>Sun, 18 Aug 1996 18:48:02 +0800
>
> At 06:32 PM 8/17/96 -0500, snow wrote:
>
> >
> > It is just as easy to take out a satelite in LOE as it is to sink an
> >oil rig, plus swapping defective Hard Drives is a real bitch.
>
> Hard drives don't work in a vacuum, at least conventional ones don't. (And
> I'm not aware of any hard drives which are designed to be permanently
> pressurized against a hard vacuum, either...)
Also, the corona effect is a real bear too. Hard drives wouldn't be able
to have the little bit of air the heads float on, and contact at 3600/7200
rpm is not good for the drives.
Then you get hard radiation that plays hob with the circutry.
Even if nobody attacked the LOE satellite, there is always space debris.
>
> Jim Bell
> jimbell@pacifier.com
>