2013/6/9 Jim Thompson <[email protected]> > > On Jun 8, 2013, at 2:24 PM, Michael Schuh <[email protected]> wrote: > > i wouldn't only rely on the manufacturer but on the chip type; just saying > > > If by 'chip' you mean 'controller', I agree. > > If by 'chip' you mean the actual flash (memory), then… you're likely > mistaken. Intel and Micron are the same thing. (Micron is a second > source for Intel flash.) > > i mean SLC and MLC Flash-Memory-Chips; regardless which manufacturer. in first place.
p.e. Intel actually sells MLC instead of SLC ( iirc they had a series with SLC but they are to expensive, not sure if they sell those further ) Intel SSD (actual series afaik MLC) compensate the different endurance with more memory-chips and the controller software that round-robins the writings over the entire disk except a reserved space for dying cells. And yes there are manufacturers with much cleaner production and higer quality of the memory-chips. > Other manufacturers (Samsung, etc) also make quality flash parts. I > suppose there could be some seconds coming out of China, but if you buy the > bottom of the price curve, you deserve what you get. Many people who > complain about SSD reliability have either mis-used the technology, (e.g. > write amplification rears it's ugly head) or have purchased the cheapest > SSD they can find, and then complain when the the part fails. > > The upthread advice about Intel SSDs is sound. Now that the Sandforce > controller debacle is over, Crucial (who are really a rebrand of Micron > (see above)) and Samsung also make good, reliable SSDs. > > As a none-too-subtle hint: there are reasons why Netgate has, to date, not > shipped SSD (or SSD-like) technology in our pfSense-powered appliances. > It's not that we didn't know how, but rather the difference between > "product" and "technology demonstration". If you're only concerned with > making one, or a dozen, for your own use, the effects of your decision are > limited. When you're making 1,000s of units per year, the weight of the > decisions caries real monetary consequences. > > Also note that phk was discussing flash parts a lot more like 'Compact > Flash' or USB flash than SSDs in that document, while this thread has been > about using SSDs. Apples != Oranges (Just sayin'). > > Jim > > > > _______________________________________________ > List mailing list > [email protected] > http://lists.pfsense.org/mailman/listinfo/list > >
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