Real $/TB for internal hard drives and external SSDs — with CMR/SMR labels, RAID-safe indicators, and speed ratings. Built for NAS builders, homelab enthusiasts, and smart storage buyers.
CMR vs SMR comparison. RAID-safe NAS drives. $/TB sorted. WD Red Plus, IronWolf, Exos, WD Gold — every drive labeled.
Browse NAS HDDs →Speed (MB/s) vs price. USB4, Thunderbolt, USB 3.2 Gen2. PS5 / Xbox / Mac compatible. Samsung T7, SanDisk Extreme, Crucial X9.
Browse External SSDs →Amazon product listings are notoriously bad at disclosing what matters most for storage buyers. CMR vs SMR? Hidden in model number suffixes. USB interface speed limit? Buried in the spec table. Actual $/TB? You have to calculate it yourself — and the capacity listed in the title is often wrong.
This tracker does the work for you: parses capacity from titles, calculates $/TB, labels every drive's technology and interface, and flags warranty and condition on every listing.
CMR (Conventional Magnetic Recording) = RAID-safe, NAS-safe, sustained write performance. SMR (Shingled Magnetic Recording) = cheaper, but causes RAID rebuild failures and NAS warnings. This tracker labels every drive.
Advertised "1000 MB/s read" is meaningless if your port only supports 500 MB/s. This tracker shows both the drive's rated speed and the interface's theoretical max — so you know what you'll actually get.
WD Red Plus · Seagate IronWolf · IronWolf Pro · WD Gold · Seagate Exos · Toshiba N300 · WD Purple Pro · Seagate Barracuda · WD Blue
Samsung T7 · Samsung T9 · SanDisk Extreme · SanDisk Extreme Pro · Crucial X8 · Crucial X9 · Crucial X10 Pro · WD My Passport SSD · Seagate Fast SSD · OWC Envoy · LaCie Rugged