The WD Black2 Review: World's First 2.5" Dual-Drive
by Kristian Vättö on January 30, 2014 7:00 AM ESTFinal Words
There are two conditions in which the Black2 makes sense:
1) You have a laptop with a single 2.5" hard drive bay and no mSATA slot
2) You need more capacity than 480/512GB and/or aren't willing to pay for a 500GB class SSD.
If your answer to both questions is a 'yes', the Black2 is likely the best option in the market right now. However, if you answered 'no' to either of the questions, there are far better and cheaper options available.
If your laptop can take two 2.5" drives or a 2.5" drive and an mSATA SSD, it's much cheaper to go that route. As the table below shows, a 120GB SSD and a 1TB 2.5" hard drive costs almost half of what the Black2 does.
| NewEgg Price Comparison (1/28/2014) | ||
| Cost | ||
| WD Black2 120GB SSD + 1TB HDD | $290 | |
| Kingston SSDNow V300 120GB + HGST Travelstar 1TB 5400rpm | $85 + $65 = $150 | |
| Crucial M500 120GB mSATA + HGST Travelstar 1TB 5400rpm | $80 + $65 = $145 | |
By buying separate drives you are also given the option to choose the SSD and HDD in case you want a higher performance SSD or prefer a certain brand HDD. Even if you went with a high-end SSD like the 120GB SanDisk Extreme II, you would end up saving over $50. In fact you could easily buy a 240GB SSD and still easily beat the Black2 in price.
If you don't need more than 240/256GB of SSD storage, the solution is simple: buy an SSD and use it as primary storage. As a matter of fact, Crucial is currently having a sale on the M500 and the 480GB model is retailing for $270 in NewEgg, $20 less than what the Black2 costs. This might be just a short-term sale but lately I've seen many 480/512GB drives selling at ~$300, so the Black2 really only makes sense if you need more than 480/512GB.
Don't get me wrong; I like the concept of the Black2 but the execution and timing are not the best. Had the Black2 been released two years ago, I would've been all over it. Back then mSATA was still rather new and most OEMs hadn't adopted it yet, but nowadays nearly all decent laptops have an mSATA slot that makes a dual-drive or hybrid drive redundant.
Furthermore, the SSD in the Black2 is only mediocre, although I must say I wasn't expecting much in the first place. There must be a reason why none of the big OEMs have adopted JMicron's controllers and I think performance is one of the top reasons. If the Black2 sees another generation, I certainly hope WD focuses more on the SSD performance (maybe Marvell silicon?) because the truth is that there are far better SSDs in the market. Couple that with the pricing and high power draw and we're really looking at a very niche product.
If there is one thing WD should have done in the Black2, that would be caching (or tiered storage). The reason why people usually have negative thoughts about caching is because the solutions are always crippled by small, low performance SSDs. The Black2 has enough NAND to make the caching experience smooth and with the right software the Black2 could have been similar to Apple's Fusion Drive. I'm currently testing a development version of software that will bring Fusion Drive like tiered storage to Windows and it works with the Black2 as well, but until it becomes available (and hopefully WD bundles it with the Black2), the biggest potential of the Black2 is missed.
At $199 and with proper caching software, the Black2 would be a totally different product. Right now it's an expensive niche product that only serves a small user base. If you meet the two conditions at the top, then I have no problem recommending the Black2 but otherwise you should look elsewhere.
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Shadowmaster625 - Thursday, January 30, 2014 - link
What a joke. For $300 you can just buy a 512GB SSD and not have to deal with a 2nd partition that might just decide to disappear at any moment due to its odd driver dependency. There's actually one on sale right now for $260. What is WD smoking?LauRoman - Thursday, January 30, 2014 - link
As i understand it it is not a weird driver dependency. The driver is really only needed to flip a switch that woun't suddenly flip back by itself, even if you destroy the drive's mbr/gpt. It should work in any os after the switch is flipped. I don't know if you need a Windows install to switch it on though.Panzerknacker - Thursday, January 30, 2014 - link
Exactly, that's what I'm thinking as well, the driver is only used to flip a certain switch that's unique in this particular drive. Now that I'm thinking of it they probably did this to help with installing Windows. When installing Windows the installer will only find the 120gb partition, Windows has the strange behaviour of messing around with partitions during installation and putting system stuff on other partitions. Normally you can disconnect the other drives in the system, not on this one ofc because it's 2 in 1. Then when everything is installed you can enable the other partition with the switch triggered by the driver.I'd wonder how you would do this without Windows tho, they should also include a hardware switch.
mikato - Friday, January 31, 2014 - link
I HATE that. Detaching everything but the SSD is standard procedure during Windows installation now because of that. It's a nasty surprise when you decided to take out your hard drive or switch it with another only to find that Windows won't boot now, even when you had installed Windows on the SSD! Do you know if Windows 8 does this?HisDivineOrder - Thursday, January 30, 2014 - link
It's been a long time since WD truly impressed me with a new product.Guspaz - Thursday, January 30, 2014 - link
I've seen the 1TB Samsung 840 EVO go under $500. If you gave me the choice between paying $300 for a slow 1TB HDD with a pretty terrible 120GB SSD, or paying $500 for a fast 1TB SSD, which do you think I'd pick?About the only thing that could make the WD solution interesting is if it offered a substantially more attractive price than the SSD (and "somewhat cheaper" isn't), and if it had the SSD caching solution in hardware so that it could just be plugged in and used as a normal drive.
With a full 1TB SSD costing not much more than this thing, it's not useful for the "notebook with only one 2.5" slot" scenario... or any other scenario.
coolhund - Sunday, February 9, 2014 - link
Exactly. Also keep in mind that SSD prices keep falling and falling, while HDDs still havent gotten back to the prices that we had before that 'flood' and are not really getting cheaper nowadays. And thats why it will fail, just like the hybrid ones. I think it will actually fail even more.mobutu - Thursday, January 30, 2014 - link
Too little, Too lateI mean with very good 1TB SSDs ready to go mainstream at 400-500USD this wd2 is completely useless, especially for all the people that already use SSDs and know what a tremendous impact it has over a hdd dinosaur (performance/power/heat/silence/formfactor) (msata at 1TB already gimme a break must be a joke to look at wd2).
HDDs are close to extinct, it is a matter of time/price until they'll dissapear completely exactly like the FDD ... both are/were huge bottleneck to a system.
chizow - Thursday, January 30, 2014 - link
I thought this was pretty useless when it was announced a few months ago, but with the increasing popularity of SFF and NUC-like devices, this drive would be perfect.Gigaplex - Thursday, January 30, 2014 - link
Or you could just get a 1TB SSD, this drive isn't that much cheaper.