The only thing close to your story is the comment from Robert and Barbara Thompson in _PC Hardware In A Nutshell, 2e_ where they comment that on a device used as a server or any other PC that needs a large RAM, they always use ECC memory (Error Checking and Correction) because (honest!) cosmic rays do strike.
Quote: One common cause of "flipped bit" memory errors is, believe it or not, cosmic rays. The more memory you have installed, the more likely it is that a random cosmic ray will impact one of the memory cells in a chip on your system, causing the contents of that cell to flip from binary zero to a one or vice versa. We don't pretend to understand this issue, but we've been told by memory experts that for systems with 512MB of RAM, using ECC versus non-parity memory is about an even trade-off in terms of extra cost and lost performance versus the likelihood of memory errors. For systems with 768MB+, we use ECC memory exclusively. End quote (pp201-2). However ... that could also be a Real Convenient Excuse. Do you have any kind of other experience with the people who said this (like, are they naturally FUD-prone)? Annlee ""Juan Carlos Perez"" wrote in message news:[EMAIL PROTECTED] > We have a Cisco VIP card plugged into a 7500 router. Every once in a while > the card just stops working and sometimes it gets stuck so hard that we > have to reload the microcode. The last we did that, the router crashed and > had to be reset (Ugly!). Well, it gets worse. After having to convince the > guys at the local Cisco office to help us in this issue, they came to our > facilities and began their analysis. To make a long story short, they told > us that these problems were caused by cosmic rays! We almost fainted! Cosmic > rays! > Has anybody around here ever heard of this problem in this combo? Let me > tell you this router is not installed in a spaceship or something like that, > it4s just an ordinary datacenter. > Any ideas about what the real problem might be? > > P. S. The router is using a recent version of IOS (newer than 12.1) and has > been patched as per the Cisco site. > > Thanks a lot for any advice on this issue. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71409&t=71402 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
