On Sun, Jan 9, 2011 at 16:02, Stan Hoeppner <[email protected]> wrote: > Dotan Cohen put forth on 1/9/2011 5:58 AM: > >> Thanks, Klistvud. I just purchased a WD10EARS (1 TB drive) and I >> noticed that my writes are _slow_. I think that it may be a KDE issue, >> there even is an open KDE bug that copy/paste is vry slow. But even >> copying via cp I feel that it's not moving, I need to benchmark the >> drive. Your post gives me some other things to check and configure. >> Thank you! > > Given the inherent performance problems Linux currently has with the > 512/4096 byte sector hybrid drives, called "Advanced Format" by Western > Digital, my recommendation to Linux users is to stay away from these > drives at all costs, regardless of how attractive the price/GB ratio is. > > Specifically regarding the WDxxEARS drives, WD has a drive of the same > capacity but with native 512 byte sectors in either or both of the Blue > and Black product lines. The only advantage of the Green (EARS) line is > a 3TB drive model not present in the Blue/Black lines. > > Additionally, the Blue and Black drives have full 7.2k spindles and will > thus yield far superior performance to the Green (EARS) drives for the > same size drive. > > If one is so power consumption conscious to be suckered into a Green > (EARS) drive, then one needs to realize the CPU dissipates about 10 > times the wattage/heat of a hard drive. Thus, concentrate your power > saving efforts elsewhere than the disk drive. Buy a non "green" drive, > and save yourself these sector alignment/performance headaches. > > Dotan, in your case, you should have purchased a WD10EALS instead of the > WD10EARS: > http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701277.pdf > > This Blue series 1TB drive has vastly superior performance and little > additional power consumption compared to its WD10EARS cousin. > > http://www.newegg.com/Product/Product.aspx?Item=N82E16822136534&cm_re=wd10eals-_-22-136-534-_-Product > > http://www.newegg.com/Product/Product.aspx?Item=N82E16822136490&cm_re=WD10EARS-_-22-136-490-_-Product > > The Blue drive costs $5 USD more at Newegg. In all respects it is a > vastly superior drive for Linux users over the WD10EARS Green drive--no > sector alignment headaches, 50%+ better streaming and random IOPS > performance. >
...and unavailable in my market. I bought the EARS for the local equivalent of $76 USD, the next 1TB drive costs almost double that. Just to be sure, I checked the local price comparer website and sure enough I see the EALS for about $90 USD, however the store is out of stock. Actually, they haven't gotten stock yet! But I do feel "suckered" now that you mention it: I thought that this was a 7200 RPM drive. Oh well, what is done is done and I should have been more careful when I bought it. -- Dotan Cohen http://gibberish.co.il http://what-is-what.com -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
