On Thursday 11 October 2007, John R Pierce wrote: > Peter Arremann wrote: > > On Thursday 11 October 2007, Centos wrote: > >> The ECC errors only happens when I am transferring data from other > >> storage to this one that we get error. > >> it only happens when it is writing data to it. > > What do you mean by "transferring data from other storage to this one" > ? These are main memory (RAM) ECC errors and have nothing to do with > disk storage, networking, or anything else. > > and, 'writing data to it', its not clear what the 'it' is referring to. Storage - anything that can store data. ECC is a generic term and covers all kinds of checksumming algorithms. I was talking pretty generic - don't care if ram, caches, nand-flash, ficon or anything else. I was trying to get across that its hard to pinpoint where your bits flipped - in the storage device, on the transmission there or back. > So I dunno what you're talking about 'transmitted ot storage devices', > etc.... Disk drives have their OWN ECC, this is quite different and > seperate and has no relationship to the ECC in main memory. Right - and again I was using generic terms because at the time that I posted, the question was if the RAM is bad or any other component... :) Peter.