Slow WD 4 Tb Drive
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Ok... So I've been struggling with this 4 Tb Western Digital drive for some time now. I think this is the model I'm working with: https://www.bhphotovideo.com/c/product/1277275-REG/wd_wdbyft0040bbk_wesn_4tb_my_passport_portable.html
I managed to get it plotted with xplotter v1.0 but it took MANY DAYS. Now that I'm able to mine with it, it seems to be picking up DLs just fine, but the read speed is just as slow as the write was! We're talking ~ 15 Mb/s. I tried a couple things like redefining the volume and doing a slow reformat before re-plotting it but those didn't seem to help.
Anyone have suggestions on how to improve this read/write speed of this drive? It seems funny that I can scan an 8 Tb drive in less time than this 4 Tb...
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@k.coins how you connect it? USB2 or USB3?
Interface
USB 3.0 (USB 2.0 compatible)
USB 3.0 Transfer Speeds: up to 5 Gb/s
USB 2.0 Transfer Speeds: up to 480 Mb/s
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@Blago Wish it was that easy. Unless these cables are lying to me, it's USB3. Right now it's plugged into a 3.0 hub but I've tried directly connecting to my 3.0 port and it still had slow reads - it was directly plugged into a 3.0 for plotting and the lettering would go grey after only about 25% (calcs finished before writing, right?)
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@k.coins I noticed the drive you linked has hardware encryption. You don't have that turned on somehow by accident do you?
Another thing to do is make sure write caching is enabled on the drive. It should only effect write speed, though.
Control Panel > Admin Tools > Computer Management > Device Manager > Disk drives >
Right Click a drive > Properties > Policies > Enable write caching on the deviceBeyond that, you might check the general health of the drive, though admittedly I've never tried this:
http://support.wdc.com/downloads.aspx?p=3
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@k.coins try to test your drives http://crystalmark.info/software/CrystalDiskMark/index-e.html
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No sure write cacheing will help with plotting unless your plotting a really small file. Even a 100 GB plot will fill a normal cache quickly and then it's just no cache writing.
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Blago's miner and XPlotter do not uses Windows caching (only drive's cache ~8Mb)
