Question:What is the tolerable magnetic field (in Tesla) for a hard disk? ?? ??(2 answers) ?? ????What computer components are currently vulnerable to magnets? ?? ??(15 answers) ?? ???Closed 5 years ago. ?

As per the title, would these magnets

Magnet Image

be enough to damage a portable hard drive such as this Seagate GoFlex

HDD Image

if left next to each other for longer than, say, 20 minutes?

Thankfully, this is all hypothetical at this point as I have kept them apart to date and my question comes to mind if the two fell on top of one another whilst in a backpack or bag.

Answer: Considering the drive itself contains a magnet that I would expect to be far stronger than these are, I would doubt there to be any issues from them coming into contact. It’s largely a myth that hard drives are easily wiped by a magnet (VHS, tapes and floppy media are far more likely to). In fact, a test was done here involving huge neodymium magnets, far more powerful than most magnets you will have, which caused zero data loss at all (more of a chance of mechanically damaging the drive due to the power of them if they’d been closer to the read heads).

I wouldn’t state it’s impossible for some form of damage to occur, but it’s very unlikely. Don’t worry too much about it, but keep them separate if you can.