Seagate SATA Hard Drives

Seagate SATA hard drives are the largest single-brand drive group we stock. Because Seagate publishes a consistent ST model number on every unit, these are among the easiest drives to match exactly — the model number alone pins down capacity, form factor and family.

The families you will see

• BarraCuda — the mainstream 3.5-inch desktop line, and by a wide margin the most common family here, including the older 7200.7 through 7200.12 generations
• Constellation — enterprise nearline drives built for continuous duty rather than desktop use
• Momentus — the 2.5-inch laptop line, typically 5400RPM and occasionally 7200RPM
• Exos — the current enterprise line, covered in more depth on our Seagate Exos page
• SkyHawk, IronWolf and SV35 — surveillance and NAS drives, covered on our NAS and surveillance page

Reading an ST model number

An ST number such as ST3250310SV or ST9160823ASG encodes the series, the capacity and a family suffix. The leading digit indicates form factor — ST3 for 3.5-inch and ST9 for 2.5-inch — which is a quick way to confirm you are looking at the right physical size before checking anything else.

Speeds

The majority of our Seagate SATA drives run at 7200RPM. There is also a meaningful number of 5400RPM units, chiefly Momentus and other 2.5-inch models, plus some drives at 5900RPM, a speed Seagate used on capacity-oriented and surveillance-oriented models to reduce heat and power.

Unlike OEM-labelled drives, Seagate retail and bare drives carry no server vendor firmware, so behaviour in a managed RAID controller varies by controller. Tell us the ST number or what the drive is going into and we will confirm the match.