But, these drives prioritize long-term reliability and always-on availability over raw speed. On paper, they seem quite slow, considering they are 5400rpm drives. The My Book Duo contains two WD Red NAS ( Network-Attached Storage) drives. What makes it the best external HDD in our books is its fundamental performance improvement over other mechanical external drives and the careful choices Western Digital has made to balance performance, cost, and reliability. The WD My Book Duo is not a portable drive, so it would be a poor choice if you need the specific strengths of the portable form factor. That makes them ideal for creative professionals who aren't always in ideal conditions.Įxternal hard drives are varied and specialized for certain purposes, so choosing the "best overall" drive is tricky. Ruggedized drives are designed to take more punishment with water, shock, and dust protection. Related: What's the Best Way to Back Up My Computer?ĭurability is another factor. ![]() Drives that use methods such as RAID can go significantly faster, and, of course, non-mechanical Solid State Drives (SSDs) are the fastest option possible. ![]() Typical mechanical drive speeds fall between 100-150MB/s, with high-end drives reaching 250MB/s. SATA III), and the speed of the interface of the external connection (e.g., USB 2, USB 3, or Thunderbolt). Performance in an external drive depends on several things, such as the rotational speed of the drive, the drive interface (e.g., SATA II vs. The downside is that they can be slower than full-size desktop external drives. They also tend to be smaller and pocketable, making them great travel companions. ![]() There's no need to look for a power outlet to use them. First, is it a desktop external drive or a portable external drive? Portable drives get all the power they need from the USB connection.
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