On 20 Feb 2007, Al Boldi outgrape: > Eyal Lebedinsky wrote: >> Disks are sealed, and a dessicant is present in each to keep humidity >> down. If you ever open a disk drive (e.g. for the magnets, or the mirror >> quality platters, or for fun) then you can see the dessicant sachet. > > Actually, they aren't sealed 100%. I'd certainly hope not, unless you like the sound of imploding drives when you carry one up a mountain. > On wd's at least, there is a hole with a warning printed on its side: > > DO NOT COVER HOLE BELOW > V V V V > > o I suspect that's for air-pressure equalization. > In contrast, older models from the last century, don't have that hole. It was my understanding that disks have had some way of equalizing pressure with their surroundings for many years; but I haven't verified this so you may well be right that this is a recent thing. (Anyone know for sure?) -- `In the future, company names will be a 32-character hex string.' --- Bruce Schneier on the shortage of company names - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
