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To do this I simply ejected the drive, powered down and removed one of the drives. I then popped in a new drive and connected theMy Book Duo. The danger now is that the controller of the MyBook Duo case could also die. Both disks are then still intact, but can probably no longer be read anywhere… When the drive mounted, WD Discovery alerts that the RAID needs to be rebuilt I followed the one-step instructions and left the Duo to it.
When you pry the top of the My Book Duo, you can see that it uses standard 3.5-inch hard drives that you can easily replace. It includes two WD Red hard drive, which are used for NAS drives. In the future, if I need more storage, I can just replace the hard drives instead of buying an entire external hard drive. It’s more economical and better for the environment. UPDATE: According to Western Digital, the compatible drives are WD Green and WD Red. They do not say that it is compatible with other drives.Therefore, that plan that had you securing 22TB or 44TB of local data each night on this external drive is impractical from the outset unless the changes are minor or incremental. Of these, the WD Drive utilities are the most vital, as they allow you to change the RAID configuration of the Duo.
The drive looks like any other external drive but inside features two hard drives and hardware RAID. These two drives can be configured to either appear as one large 12TB drive or a 6TB mirror. The USB 3.0/2.0 ports are designed for plugging in external devices and additional drives, which is handy. It also acts as a rather nifty doc for older devices that still utilise the USB 3.0/2.0 standard. Alongside the two drives is the RAID hardware, this comes pre-configured as RAID 0 which optimises speed and capacity for the drive.videos and 360 photos can take up a lot of space, especially if you use high quality formats such as Prores or TIFF. I’ve almost filled up two 8TB hard drives and was looking for an external hard drive and chose the WD My Book Duo is an external hard drive with two bays that can each accommodate standard 3.5-inch hard drives. Chance of failure: higher. If the normal chance of failure of one drive is 1%, then the chance of failure with RAID-0 is almost double at 1.99%. RAID 0, or stripe, maximises the storage so will utilise both drives and give you a single storage drive with a 12TB capacity. Striping the drive will also give you the fastest read and write times. Having this much capacity sounds like a dream, especially for those using a 4TB external drive or a smaller Duo model. But the dream of having this much space is also, oddly, something of a nightmare. A high price is expected at launch for the new flagship Duo, but once some direct competitor products are available, the price is likely to go down.
The My Book Duo is far more than just a simple external drive. It has a wealth of additional features that will appeal to photographers and videographers. Features Given the tools that other WD products come with, the selection of software that is included with the 44TB Duo is underwhelming. That said, compared to SATA SSD, the drives in the Duo are painfully slow even if you configure them in the optimal performance arrangement, striped, aka RAID 0. A little research reveals that the larger PSU comes with Duo’s of 16TB or bigger, and that infers it might be a bad plan to get a 12TB or smaller Duo and put 22TB mechanisms in it. We’d strongly recommend anyone buying this unit to reconfigure it to RAID 1 (Mirror) mode even if that waves aloha to 22TB of space. Having this volume of data on a device, assuming that neither drive will ever die, is more optimistic than is healthy for most people.The new My Book Duo has diverged in one major way from the previous designs; the rather lame ‘Book’ analogy has finally been terminated. As default, the drive arrives formatted as NTFS which is a PC file system. As a Mac user, I’ll need to reformat as a Mac Format, either JHFS+ or APFS. I’ve selected JHFS+ for maximum compatibility. Connection speeds for both read and write are good and more than fast enough for you to edit 1080p video directly from the drive.
With this configuration, the two disks inside the My Book Duo are treated as independent hard drives (each one has its own drive letter). With My Book Duo, you only need one USB cable to access both drives. The WD My Book Duo (2017 edition) is certainly a class act that combines new styling with excellent performance and potentially massive capacities.In RAID 1, mirror mode, using CrystalDiskMark 8.04. the drive read at just 118.83 MB/s and wrote at 178.86MB/s, showing that some caching was helping the write performance. Over RAID 0, those numbers increased to 317.43MB/s reads and 281.99MB/s writes. A slightly odd result, but the cap of around 282MB/s writing is only 58% better with both drives over one, and you double the chance of data loss for that extra speed and twice the capacity.
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