Originally Posted by TPeterson
And I'm not sure what you mean by "worked fine." Are you saying that the TViX offered to format the drive that you'd wiped? If so, we're saying essentially the same thing: drives that the TViX doesn't offer to format likely have some sort of formatting already, even though it may not be apparent or usable.
Quote from the DVICO TViX M6620N Manual, page 10:
* TVX-HD automatically formats when you install an unformatted new hard disk. Do not shut down the power
when formatting the hard disk.
Worked fine = Worked as advertised just like the manual says.
My experience over the last 20 or so hard drives and SSDs that I have purchased disagrees with your supposition that hard drives come from the factory with some sort of formatting (more correctly: a partition table and/or file system) already on them. In fact, if I did receive a new drive with a partition table and file system on it, I would return it because it was clearly used
I have no opinion on whether or not the TViX will re-format an already formatted drive as I've never tried it. I read the above quoted line in the manual and removed formatting from my drive (since it was
used) prior to installing it into the TViX. I don't recall if it offered to format it or just did so without asking.
Back to the source topic: Drive formatting and Advanced Format (AF) drives, etc.
Everything I've read says at this time there is very little difference in speed (transfer rates) using AF drives. The primary purpose is for AF is for down-the-road changes in platter drive access technology. The Western Digital (WD) ATTO testing that I've read shows a 10% increase in transfer rate using a worst-case configured WD AF drive (model with EARS in the model number) and the equivalent non-AF WD drive (EADS) and the best-case (proper alignment and so on) resulted in a 13-14% increase. The point being if you have an EARS drive, it will still perform at least 10% better than a EADS drive whether or not you take the time to align your filesystem.
Having said all that: In my opinion, whichever "Green" drive you buy, the TViX will not show any noticeable difference so spend your bucks as you wish. The cheaper EADS models will work fine and so will the EARS models. If you want better performance because you're getting stuttering during time-shifting or something similar don't buy a "Green" drive at all. When it comes to hard drives, energy savings and noise and heat reduction are the opposite of performance. WD has a Blue line that splits the heat/performance of the Green and Black lines and a new Red series which are recommended for NAS use.
I will say that if heat is a concern, my Red drives run only a few degrees hotter than my SSDs and are significantly better at throughput than the Green drives. My Blue drives are only a couple more degrees hotter than the Red, but the Blacks are quite a bit hotter. I don't own any Green drives mostly because early versions tended to go to "sleep" and stay there when used on some linux systems. My understanding is this has been resolved.