Hans Witvliet wrote: >> The only computer I have with RAID also has error correcting memory, as >> many servers use. Also, back in the days when I was a computer tech, >> servicing mini-computers, hard drive failures were far more frequent >> than memory. >> > > mem, mobo's and cpu's are most likely to suffer from ESD (and heath) > The effects will show up sometimes at late as in several years. > I found out that most shops haven;t got a faintest clue what ESD is. > > Drives will suffer not only from ESD and heath but also from wear, > G-forces. > > So if you obtain your system from proper qualified supplier, that takes > precautions and test the componentes before using them, or take those > precautions yourself. chances that you suffer from mem problems is often > smaller than HDD problems. > > Note, I assume you treat your components well, playing with > overclocking, wrong ras/cas timing, overheated north-bridge can also > cause "funny effects". > > Output of the powersupply has to meet more stricter demands, as mem and > cpu are using still lower voltages these days. A spike of 0.1 volt did > do anything some years ago, but can corrupt the content of your DDR > today. > > hw > Back in the days when I supported mini-computers, everything was TTL logic, with ECL used in some critical areas. The CPU was two 15 inch square boards! A 200 MB disk pack drive was the size of a washing machine and required 3 phase power. Some of the systems I worked on were water cooled. Back in those days, I worked down to the microcode level, that is the instruction set within the CPU, that enabled it to run the instruction set the applications would use.
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