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hbuser2016-08-17 23:25:34
Hard disks
hbuser, 2016-08-17 23:25:34

Is it possible to seamlessly use WD Green hard drives with a NAS?

Hello.
NAS - Synology DS212.
One drive - 3TB Constellation ES2 Seagate.
It is necessary to collect mirror RAID.
As the second candidate I consider WD Green 3Tb.
Now closer to the question.
There are the following features that are not implemented in some HDD models to stimulate sales of server versions - TLER / ERC / CCTL. All this is one and the same. In short, the bottom line is that a disk with this feature will respond quickly when reading errors occur and will not be "thrown out" of the raid array. As far as I know Seagate has an implementation, WD Green does not. There is also information that Synology uses a soft raid (mdadm) and it turns out that the presence of TLER / ERC / CCTL does not play any role. Accordingly, it is possible to use two disks in a bundle.
Confirm or refute. And what other difficulties can arise when using WD Green in Nas?
PS I understand that Seagate has a high spindle speed, and that a bunch of two drives will run at 5400 (WD Green). It suits me.
Upd.: I'll add a link here, because. there a lot is explained on the topic - https://forums.freenas.org/index.php?threads/hacki...
Upd1.: I dug up a bunch of information. A few words about WD Green and WD Red. If you do not take into account the words of marketers, then these discs are actually the same. WD is notable for the lack of TLER support (in older models, WD Green could be enabled using software, but now this feature has been specifically disabled in order to highlight a separate direction of drives intended for NAS), another firmware (one of the notable moments is intellipower, hence some what design features) and the color of the label.

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2 answer(s)
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Konstantin Galetsky, 2018-07-03
@lesrosbiznes

According to my information, Green and Red are physically the same drives. The only difference is the added tiny vibration sensor which is easily overrated as a proper metal case will quickly neutralize vibrations and only real server/enterprise drives have proper vibration sensors making them suitable for stacking many drives close together - 40 drives in e.g. Norco case.
I often hear arguments that Red is faster, consumes less power, and generates less heat than Green. But I think this is a misconception caused by a misreview that WD Green tested with 666GB platters against a model with 1TB platters. The latter will use one smaller dish to achieve the same power and therefore consumes less energy and therefore consumes less heat. Higher capacity platforms also result in higher data density, which means more sectors per track, which means more sectors per revolution (RPM), resulting in higher sequential performance.
In other words, green and red are physically pretty much equal, and the difference attributed to them is due to a misview that people take for granted. However, both Green (EARX, I think) and Red have 750GB and 1000GB platter models, so comparing apples to oranges is misleading.
Source: https://goo.gl/5nxBBP

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