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WD "Raw Read Error Rate"

post #1 of 2
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The more I search this, the more confused I get.

I have a WD20EARX that was used in a PVR for a while, and a couple of days ago I shifted it into a PC. "Raw Read Error Rate" data was at 0 to start with. After writing about 1.5TB to it I happened to notice that the data value is now 3. What does this mean? I have a couple of other WD drives in the PC (one a system drive, the other for programs), and as far as I know the "Raw Read Error Rate" data value has never changed from 0.
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Skylake I
(10 items)
 
Skylake II
(9 items)
 
 
CPUMotherboardRAMHard Drive
Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F20 Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 256GB 
Hard DriveCoolingOSPower
Samsung SSD 840 PRO 256GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 Super Flower Leadex Gold 750W 
CaseAudio
Corsair Carbide Air 540 (+3x NF-S12A FLX) Asus Xonar Essence STX 
CPUMotherboardRAMHard Drive
Intel Core i7-6700K 4GHz Gigabyte GA-Z170X-Designare F3a Corsair LPX 32GB CMK32GX4M4A2133C13 Samsung SSD 840 PRO 512GB 
Hard DriveCoolingOSPower
Samsung SSD 840 PRO 512GB Noctua NH-U12S (+NF-S12A PWM) Windows 7 Pro x64 SP1/Windows 10 Pro x64 EVGA SuperNOVA G2 750W 
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Silverstone Fortress FT02 (+4x NF-A14 PWM) 
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post #2 of 2
That SMART value indicates a read event that "didnt go as planned". By this, it could be something as simple as the drive controller missing the intended block of data by a few bits, at which point it'll re-read that data properly and move on, or it could be caused by the disks or read/write heads failing. As you only have a few errors and they all cropped up immediately after a huge data transfer, its far more likely to be that the drive controller had a couple of minor internal glitches that it immediately corrected for.

Basically, dont worry about it unless it starts climbing nonstop. Also, dont use HD Tune for checking hard drive health, use Hard Disk Sentinel. Much easier to read and gives you all the info you could possibly want regarding the health of your drives.
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Leviathan
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Charred
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Cheapshot
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CPUMotherboardGraphicsGraphics
Xeon E5-2690 Biostar TPower X79 PNY GTX 660 2GB HP GT 440 OEM 
RAMHard DriveHard DriveHard Drive
Gskill Ripjaws 4x2GB 1600mhz Seagate Barracuda 500GB Seagate Barracuda 1.5TB Western Digital Caviar Blue 640GB 
Hard DriveCoolingOSMonitor
Patriot Pyro 60GB Xigmatek Gaia Windows 7 Ultimate Acer S230HL 
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Princeton 1280x1024 19" Logitech K120 Seasonic G550 Xclio Nighthawk 
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Logitech MX310 
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