The Exos X24. Seagate packs 24TB nearline storage for data-heavy US workloads

By Julian Reed, ad hoc news New Launch Desk. Reviewed July 07, 2026, 10:32 AM ET. Details in the imprint.

Exos X24 sits in a humming server rack, its 24TB platters quietly spinning behind a brushed metal faceplate as cold aisle air washes over the drive bays. In a US colocation facility outside Chicago, a systems engineer scrolls through SMART stats, watching the Seagate nearline HDD take on another batch of log files without breaking a sweat.

What Exos X24 actually is

Seagate Technology’s Exos X24 is a 3.5-inch nearline hard drive line with capacities up to 24TB, designed primarily for hyperscale clouds, enterprise data centers, and OEM storage systems. Seagate’s own product page confirms the capacity range and target workloads.

The drive uses conventional magnetic recording (CMR), which matters for US IT buyers who need consistent write performance for backup, object storage, and analytics workloads rather than the quirks of shingled recording. Seagate’s Exos family overview lists Exos X24 as a CMR nearline platform.

Capacity, performance, and power

On paper, Exos X24 offers sustained transfer rates up to around 285 MB/s and a typical latency in the 4ms range, positioning it firmly as a bulk-capacity drive that can still keep up with modern sequential data flows like data lake ingestion. Seagate’s datasheet details performance figures and latency specs.

Seagate rates the Exos X24 for a 2.5 million hour MTBF with an annualized failure rate around 0.35%, and a workload rating up to 550TB per year, benchmarks that US storage architects will cross-check against competing nearline lines from other vendors. These reliability metrics are spelled out in the specifications section.

US availability and pricing reality

For US buyers, Exos X24 is already listed across major enterprise resellers and system integrators, typically in the 12TB to 24TB range, although exact SKUs and spindle speeds differ by channel. A CDW listing shows 24TB Exos X24 drives offered to US customers.

Street pricing in the US for the 24TB variant tends to sit in the mid to high $300s per drive at retail, but large-volume buyers in cloud and OEM segments negotiate their own tiers, meaning the public price is more a reference than a forecast for Seagate’s realized ASPs. Amazon’s listing for ST24000NM001G provides indicative US retail price points.

Why data centers pick Exos X24

In a Phoenix data hall, storage architect Maria López points at a Grafana dashboard with rows of Exos drives plotted as green disks. She explains that the team likes Seagate’s nearline line partly because capacity, firmware features, and SAS/SATA options slot into existing chassis without surprises.

Exos X24 comes in both SATA 6 Gb/s and SAS 12 Gb/s interfaces, allowing US operators to mix the drives into different backplanes depending on whether they favor lower-cost SATA controllers or denser SAS JBODs for multi-tenant environments. Seagate’s feature list confirms both interface options.

Security and manageability features

For US enterprises with strict compliance needs, the Exos X24 family offers self-encrypting drive (SED) models and options compliant with TCG security standards, which can be important for regulated industries handling financial or healthcare records. Seagate lists SED variants and security features in the SATA HDD product description.

There are also power management features including PowerChoice and PowerBalance, which US operators actually feel in the rack as slightly cooler exhaust air when density goes up but average workload levels stay modest. The datasheet explains these power and thermal optimization technologies.

How it fits into Seagate’s portfolio and stock story

Exos X24 sits inside Seagate’s cloud and enterprise segment, which the company routinely highlights as a key driver for mass-capacity revenue as AI, video, and object storage demand expands worldwide. In its recent earnings releases, Seagate explicitly calls out mass-capacity and cloud demand.

For US investors, Exos X24 is one of the concrete products underpinning that narrative: it is a high-capacity, high-workload nearline HDD sold into hyperscale and enterprise customers, contributing to the mass-capacity revenue stream underpinning Seagate stock (NASDAQ: STX).

This article was AI-assisted and editorially reviewed. Product information is provided without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Securities trading carries risks up to total loss.