"MA" <ma_dk@nospamhotmail.com> skrev i en meddelelse
news:402ba7e7$0$27386$edfadb0f@dread16.news.tele.dk...
> Using the Microdrive Above 10,000 FT
> The following came directly from IBM Support in answer to a user who was
> thinking about using the microdrive on a vacation in Napal:
> The Microdrive does need "AIR" to float the heads and typically above
> 10,000 ft the mass of the air is too low and the drive requires a
> pressurized environment similar to an aircraft or spacecraft. At high
> altitude the air bearings begin to loose support from the air molecules
> needed to provide the "air bearing" for the Negative Air Bearing Surface
> (NABS) design of the head. If this "air bearing" is removed or lowered (as
> is the case with low density air at high altitudes) the head damages the
> media and you could have loss of data. The drive is vented to maintain
equal
> pressure inside and outside to provide the air and to maintain the same
> pressure. This eliminiates the need for sealed and rigid covers that can
> tolerate pressure differences.
> The OEM Functional specification defines the warranty range for
operating
> altitude as 3,000 M or 9,000 ft (3ft/M). If the customer is mountain
> climbing with a GPS or digital camera above 9,000 ft the drive might have
> problems. (Mt Fuji ~ +13,000ft, Mt Raineer ~ +14,000 ft). Please note,
this
> is the operating environment. Non operation at high altitudes, including
> vacuum, have no ill effects on the microdrive. Within passenger aircraft,
> the cabin is pressurized to 9-10,000 feet hence the drive would experience
> no difficulty operating in an aircraft cruising at 35-45,000 ft !
>
Hej
Nu skal jeg jo ikke kunne sige hvad IBM har af spec. på Microdrive, men mit
gamle 340 MB IBM spillede uden problemer i Tibet. Lhasa ligger i 3600 Meter
som er lige omkring 10000 ft. Det virkede en hel del bedre end jeg. da vi
smuttede op i 4852 meter på mt Kamala.
Så enten and, eller mit drev er så gammelt at det ikke er regnet med i
ovenstående eller endelig forholder det sig måske som beskrevet, men mit
microdrive har ikke set spec og er dr for ikke klar over det ikke skal
virke.
Mvh.
Michael