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The WD Red WD30EFRX 3TB drive uses SATA III interface with 64MB Cache. A 3TB drive that comes with 1TB per platter drive.
As usual, the drives with all the information you’ll need+ QR Code that a lot of manufacturers irrespective of the hardware are implementing. This is a 3 TB drive with 64MB Cache made in Malaysia manufactured on 28th June 2012. As it clearly says, it comes with NASware firmware.
After removing 4x security Torx screws, there’s a foam with thermal pad taped in the middle to reduce Vibration between the drive and the PCB. Thermal pads are used to aid in heat dissipation.
Below the pad comes with the following:
The PCB has Micron 88i9346-TFJ2 controller with 64MB Hynix DDR2 for Cache. Do note that the WD 3TB Green WD30EZRS that I’ve tested a long time ago came with DDR Cache.