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Forum Discussion
Western Digital Red 4 TB: Any Hope for Ultra-6 HCL?
Right now, the only 4TB drive I see on the HCL for Ultra-6 is the Hitachi. The WDs, of course, being significantly cheaper....
The WD4001FFSX is part of the WDC Red Pro line, the WD40EFRX is part of the WDC Red line.
PeteCress wrote:
PeteCress wrote: My take-home from this: Try a couple 4 TB drives... see what happens... and be prepared to do a factory reset.
Can anybody elucidate on the two flavors of WD 4TB drives: WD4001FFSX at about $220 (http://tinyurl.com/pxnhk66) and WD40EFRX at more like $155 (http://tinyurl.com/p7h3skt)
As far as I can dope it out, the diff seems to be something around vibration tolerance - the more drives in a box, the greater vibration tolerance required - so the cheaper one should suffice for my Ultra-6.
Am I even close?
The most important difference is that the FFSX runs at 7200 rpm. So it is higher performance. The EFRX runs at ~5900 RPM - not as fast, but runs cooler/uses less power. The FFSX has a 5 year warranty, the EFRX only has a 3 year warranty.
Both are good choices.
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