Читать книгу Windows 10 All-in-One For Dummies - Ciprian Adrian Rusen, Woody Leonhard - Страница 33

Although I love my SSD system drives and would never go back to rotating hard disk drives (HDDs), SSDs aren’t perfect.

First, they don’t have any moving parts, and it looks like they’re more reliable than HDDs. But when an HDD starts to go belly up, you can usually tell: whirring and gnashing, whining and groaning. Expiring SSDs don’t give off any advanced warning signals. Or at least sounds.

When an HDD dies, you can frequently get the data back, although it can be expensive and time-consuming. When an SSD goes, you rarely get a second chance.

SSDs must take care of lots of internal bookkeeping, both for trimming unused space and for load balancing to guarantee uniform wear patterns. SSDs slow down after you’ve used them for a few months, or years. The speed decrease is usually associated with the bookkeeping programs kicking in over time.

Finally, the SSD’s own software has to be ultra-reliable. SSDs don’t lay down tracks sequentially like HDDs. They hopscotch all over the place, and the firmware inside the SSD needs to keep up.

What about USB 3? If you have a hard drive that sits outside of your computer — an external drive — or a USB drive, it’ll run faster if it’s designed for USB 3 and attached to a USB 3 connector. Expect performance with USB 3 that’s three to five times as fast as USB 2. For most other outside devices, USB 3 is overkill, and USB 2 works just as well.

This list is by no means definitive: New storage options come out every day.