Wayne, On 3/7/06, W S <[EMAIL PROTECTED]> wrote: > I was not thinking ESD as I have designed such circuits in > both bipolar and CMOS processes. Rather I was thinking more of > an internal effect on the short traces of the internal circuits or > possibly the effect of stored charge on the floating gates.
I could see how that would cause trouble with e-beam imaging. But for x-ray...? You'd need a lot of power to get anything induced on the on-chip wiring. I would think anyway... > The domains are very fragile and it > is only the high amount of error-correction that gives the reliability. Somehow that does not surprise me. No wonder people advise not to use microdrives with anything that moves (e.g. cameras). > Temperature has a major effect on magnetic > domain lifetime. Right. Although, I seriously doubt that the x-rays will be able to induce enough eddy currents to heat up the disk platters. > Securely erasing a drive > is not the same issue as subtle loss of data over time. No, it's been my experience that subtle loss of data is much worse as it's usually not discovered until the data is screwed up beyond repair and you just recycled the backup medium... > Maybe I should get out my kodachrome... I hope you store that Kodachrome according to the information in the datasheet. Otherwise, it'll actually fade faster than most other films... > It seems the only way to get long term reliable storage involves > constantly moving data to newer media. If I am traveling, and I > have photos I don't want to loose, I copy to the laptop, and > leave them on the flash card as much as I can. I copy to the laptop and when I have some multiple of 650MB's worth I burn to CD's. Leave the copy on the laptop. Tom * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
