acbytesla
Penultimate Amazing
- Joined
- Dec 14, 2012
- Messages
- 41,155
I have worked in and around computers for years, and in all that time I have never seen anyone blow up a bunch of hard drives, but it certainly is possible. I was a resident at a huge corporation one time when a guy went do some maintenance on a bunch of servers in a room that contained hundreds of computers. In order to do the work, he had to plug in a PS/2 mouse, keyboard, and monitor; it was something he had done many times, and he didn't shut down and power down the servers first. He just plugged everything in live, which I would not recommend, but that doesn't stop lots of customers from doing it anyway. But, this time he had a defective mouse, which blew a pico-fuse on the system board every time he plugged it into one of the computers, and caused it to immediately crash. He took down five different servers before giving up, but did not notice anything was wrong because there was really no visible indication the computer had stopped working from where he was in the narrow aisle behind it. (That information had to trickle in from users logging calls to the help desk.) So, this poor guy had tried to plug this stuff into five different computers, he just couldn't get it to work, so he determined - correctly, I might add - that at least one of his three items was broken.
Once I figured out what had happened - it was our equipment - I had to log a call and tell our office we needed five identical system boards for five servers that were completely down. We only had one immediately available, so the customer racked up some considerable downtime that they characterized as a "disaster". The guy who did it was fired before the day was over. The tech came out early in the morning after gathering up the required parts, and they had to pay time and materials because their maintenance contract didn't cover the damage.
The question everyone had was, why did he try five different computers before giving up? He didn't have an answer, and was sacked and out the door before I could talk to him about it. But, IMO, there was no excuse for one of the biggest corporations in the country to be ignoring its own best practices by having someone routinely plugging things in and out of live servers. Not long after that, they installed the requisite hardware to interface to the computers without manually plugging things in and out.
So, the answer is yes, a smart guy can serially blow up a bunch of equipment without realizing what is happening until it is too late. This guy was a programmer, but maybe the people in Perugia who analyze the disks are mostly software people, too. I don't know.
We've actually went over this in detail particularly Dan O and I and some others. There is an explanation for this problem and involves the tech switching drives while the power was on....doing it the same way one after another without realizing that each time he did it, he was frying another computer drive.
My problem however with this analysis, is that while it is strongly recommended not to switch PATA drives while they are "hot". Most of the time doing this does NOT result in the failure that happened 4 consecutive times in this case.
But your analysis is spot on...it is possible to for a smart person to blithely making the same mistake over and over again without realizing it.