Every Storage Device Explained in 13 Minutes

The fastest drive you can buy is also the worst place to store your photos — and if yours is a backup in a drawer, you're making a mistake. We explain every storage device in plain English: the spinning HDD (still king per terabyte), the SATA SSD that revives an old laptop, and the NVMe M.2 stick — plus the trap that M.2 is only a shape, so an "M.2 SATA" drive can be 10× slower than NVMe. You'll learn why two "NVMe" drives perform nothing alike (TLC vs QLC and the SLC-cache sprint that falls off a cliff), how to read SD card badges like V30 and A2, and the three big backup myths that burn people — RAID isn't a backup, sync isn't a backup, and an unplugged SSD slowly forgets your data while "obsolete" tape survives 30 years with zero power. It all ends with the one rule that keeps your photos safer than almost everyone you know: the 3-2-1 backup. 🔔 Subscribe to PCExplainer for more tech explained in plain English. 💬 Got a topic you want explained next? Drop it in the comments. #PC-Explainer #SSDvsHDD #DataBackup