Some readers in the past have asked us to recommend 7,200 rpm drives, but in testing such drives on real-world and backup tasks, we’ve found that rotations per minute isn’t the most important criterion to judge a drive by. The faster the platters spin-rated in rotations per minute, or rpm-the faster the drive can access data and transfer it to your computer. Speed: Hard drives contain spinning disks, or platters, with heads that move over the surface of those platters to read and write your data.But because we’ve read some customer reviews complaining about warranty claims being unexpectedly rejected, we wouldn’t value this factor over other aspects of a great drive. If all else were equal, we would always recommend a longer period of coverage. Warranty: Almost every drive we’ve tested has had either a two- or three-year warranty.Dragging and dropping files works just fine for performing manual backups, and your OS’s built-in backup utility should suffice for running automatic ones. If you don’t need the extra features in backup software, setting it up on every computer you use isn’t worth the time and effort. Backup software is another nice perk, but you can find lots of free alternatives and great options among online backup services. Nice-to-have features: Desktop drives generally have power switches so that you can be sure they’re off when you’re moving them, and these switches can also help the drives waste a little less energy when they aren’t in use in contrast, portable drives generally lack power switches. Desktop drives may be less resistant to drops and are designed to be stationary,” a product expert from Western Digital told us. “Since portable drives are meant to be taken with you, they are designed to be more durable in terms of the everyday wear and tear of taking them along with you. If you’re deciding between an external desktop hard drive and a portable hard drive, ask yourself how often you’ll be moving it around and how careful you are. Get an SSD if you want a drive that has extra protection against getting knocked around, and if you need speed.
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