While we await more Thunderbolt storage devices, Western Digital grabbed headlines not too long ago for the announcement of its 6TB My Book Studio Edition II Mac-ready external drive. The two-bay external enclosure features two 3.5" Western Digital Caviar Green drives and is available in 2TB, 4TB and 6TB configurations. The drives are priced at $249, $399 and $499 respectively although street pricing is significantly lower. I saw the drives going for $179 for 2TB, $303 for the 4TB configuration and $379 for the 6TB model at Amazon.

By default My Book Studio Edition II implements a RAID-0 across its two internal drives, although Western Digital's software lets you convert that to a RAID-1 (at half the capacity) if you'd like.

The Mac-ready feature of course means little these days since both Mac and PC platfnorms share almost all of the same components. The MyBook Studio Edition II simply comes from the factory with a HFS+ partition, Mac-like industrial design, Mac compatible software and FireWire 800 support, commonplace on many modern Macs. The drive is easily just as usable under Windows and Western Digital of course provides software for that purpose.

With two 3.5" drives inside the My Book Studio Edition II takes up about the desk space as five DVD cases standing upright. The industrial design is very Apple-like, however the construction is entirely plastic. The Studio Edition II chassis is well vented, despite there being no internal fans - slits perforate the top, back and base of the unit. The max drive surface temperature I measured was 51C under extended load.

The front is barren except for a status light. Internally there are five LEDs that drive the indicator, but from the outside it just looks like a thin strip of light. The indicator is off when powered down, glows when idle, has a KITT affect when the drives are being accessed and a progress animation if the array is being rebuilt. With five discrete LEDs driving the light any animations aren't particularly smooth.

All connections take place on the rear of the device, where you'll find a power button, USB 2.0 connector, two FireWire 800 ports (one as an input for daisy chaining FW devices), eSATA port and DC input.

Western Digital ships the My Book Studio Edition II with cables for USB 2.0, FireWire 800 and FireWire 400. Given that no Macs have an integrated eSATA port, there's no eSATA cable in the box. The power adapter is a pretty standard, generic looking AC adapter.

Internal Access

Unlike most external drives from WD and Seagate, getting access to the drives inside the My Book Studio II is made purposefully simple. The top cover is hinged with a press-to-release latch at the front. You have to press very hard to release the latch at the front, hard enough that I'm afraid of breaking the mechanism.

With the top cover lifted up there's a single tool-less screw that holds the drives in place. Unscrew it and lift one (or both) drives out by a plastic hook attached to the drive:

There's no cage around each drive, two screws hold the drive in place so when you remove a drive you're removing all there is.

Western Digital makes it easy to remove drives however you're limited in what sort of drives you can replace them with. Only WD drives will work in the chassis.

I tried replacing one of the drives with a Seagate and the My Book Studio Edition II wouldn't even detect the drive. Other WD Caviar Green drives worked perfectly however.

Performance and Usage

Western Digital sent us its newest 6TB version, which features two 3TB Caviar Green drives internally - these are the same drives we reviewed not too long ago. By default these two drives are configured as a striped RAID-0 array, however you can convert the array to a 3TB RAID-1 if you'd like.

Windows 7 Performance Comparison
WD My Book Studio Edition II FW800 7325MB H.264 Video Copy 10095MB AT Folder Copy
6TB RAID-0 (Avg / Max) 49.0 / 75.7 MBps 59.7 / 75.1 MBps
3TB RAID-1 (Avg / Max) 42.4 / 75.1 MBps 57.0 / 70.9 MBps

Despite supporting FireWire 800 there's barely any performance benefit to enabling RAID-0 on the chassis. You're bottlenecked at the interface, not the drive. I tried copying a large 7GB movie as well as the entire AnandTech folder on my drive with tons of small jpegs, both sequences ended up at around 75MB/s in RAID-0 or 70MB/s in RAID-1. Dropping to USB 2.0 caused peak performance to drop to around 30MB/s.

Windows 7 Performance Comparison
WD My Book Studio Edition II USB 2.0 7325MB H.264 Video Copy 10095MB AT Folder Copy
6TB RAID-0 (Avg / Max) 28.2 / 30.5 26.4 / 30.9

In RAID-1 mode the drive behaves as expected. Remove either drive in RAID-1 and your array will keep working. Rebuilding unfortunately takes a very long time, something that's not atypical for a RAID array.

Final Words

If you're a non-Thunderbolt Mac owner that needs a good amount of external storage, Western Digital's My Book Studio Edition II works well with no real issues. The only trouble I had with the setup is that down the road if you need to replace the drives inside the Studio II you'll have to be sure to source Caviar Green drives from Western Digital. The enclosure doesn't feel super expensive thanks to its plastic construction but it does look like it belongs on a desk next to a Mac. The drives run reasonably cool thanks to their sub-6000 RPM spindle speed and well ventilated chassis. Pricing is somewhat competitive with single drive solutions from Seagate, but if cost is a concern you're almost always better off buying a drive and a cheap external enclosure. I will add that finding an affordable 2-bay 3.5" drive enlcosure with FireWire 800 support is tough.

What I'd really like to see is a version of the My Book Studio Edition II with USB 3.0 and Thunderbolt support. Promise's Pegasus is a great performer but it's incredibly expensive. Perhaps Western Digital could do something about that at a more consumer friendly price point.

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  • iSayuSay - Monday, September 12, 2011 - link

    WD externals is great, I used some and thank God they never fail me. But for this 6TB WD Mybook Studio, why not including hi-end ports for them?

    No USB 3.0? No Thunderbolt? No eSATA? Oh please .. they say it's "Mac ready" .. well all new Mac now has Thunderbolt, and all PC now has USB 3.0

    Why not including those, what's the RAID0 for then? FW800 still has not enough bandwidth for it anyway. I'd pay $100 more than it is today if they have those ports :(
    Reply
  • oyabun - Monday, September 12, 2011 - link

    I concur that you should test with eSATA as well, the review is not complete without it, regardless of the "Mac-ready" moniker. Reply
  • Googer - Tuesday, September 13, 2011 - link

    Why no e-sata benchmarks? Perhaps that would have yielded better results than FW800. Reply
  • ShangoY - Tuesday, September 13, 2011 - link

    Trusting data to this thing on two WD drives in RAID0 is like trusting Lindsey Lohan to return your borrowed jewelry, or Democrats to not raise taxes, or Uwe Boll to direct a good movie. You've been forewarned.

    Repeat after me, RAID0 is not RAID, RAID0 is not RAID, RAID0 is not RAID. If you are trusint this thing for backups, you'd better switch it over to RAID1 as soon as you get it.
    Reply
  • DaveLikesHardware - Wednesday, September 14, 2011 - link

    When looking at NAS-like hardware there are two criteria I use to determine if the product warrants a second look:

    1) 2 hard drives (check)
    2) Network connection (nope)

    This seems like a niche product for artists and media collectors.
    Wake me up when you review a home version rather than personal.

    On a side note, I remember seeing a picture of a 6-story, 15-GB, robotic "storage array" at NASA. Now you can practically have that on your desk.
    Reply
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