Seagate enterprise storage authority

Seagate Exos: Models, Generations, Prices and Enterprise HDD Guide

Seagate Exos is a large enterprise-drive family, not one interchangeable hard drive. This guide separates generations, SATA and SAS interfaces, sector formats, security variants and exact models before comparing current offers.

Exos specifications reviewed August 5, 2026 X16 through Exos M Generation, interface and model verification required

Quick answer

For a normal SATA NAS or home server, begin with an exact SATA model and confirm that the enclosure supports its capacity and 512e sector format. Use SAS only with a compatible HBA or backplane. Exos X24 is the established 12TB-to-24TB channel generation, while Exos M carries the newer 24TB-to-32TB HAMR-CMR models.

Tracked generationsX16–Exos MExact models remain separate

InterfacesSATA and SASNot interchangeable at the controller

Enterprise workload550TB/yearRepresentative current Exos tier

Warranty class5 yearsVerify seller and regional eligibility

Exact model data

Representative Exos generations and exact models

Capacity	Model	Generation	Interface	Sector format	Security	Recording	Cache	Max sustained	Status
16TB	`ST16000NM001G`	Exos X16	SATA	512e/4Kn FastFormat	Standard	CMR	256MB	261MB/s	Older generation
18TB	`ST18000NM000J`	Exos X18	SATA	512e/4Kn FastFormat	Standard	CMR	256MB	270MB/s	Older generation
20TB	`ST20000NM007D`	Exos X20	SATA	512e/4Kn FastFormat	Standard	CMR	256MB	285MB/s	Older generation
22TB	`ST22000NM001E`	Exos X22	SATA	512e/4Kn FastFormat	Standard	CMR	512MB	285MB/s	Older generation
24TB	`ST24000NM002H`	Exos X24	SATA	512e/4Kn FastFormat	ISE	CMR	512MB	285MB/s	Current channel generation
32TB	`ST32000NM004K`	Exos M	SATA	512e/4Kn FastFormat	ISE	HAMR-CMR	512MB	285MB/s	Current Mozaic generation

A capacity alone does not identify an Exos drive. Confirm the entire model number because generation, interface and security configuration can change at the same capacity.

Live catalogue

Current exact-model Seagate Exos offers

Only fresh, exact-model products returned by Amazon's new-condition search are eligible. Featured prices are shown when Amazon exposes them; products with no buy box are shown as buying options. Generation, interface, capacity, security class and exact model are enforced.

Search offers Sort

Checking the current Cloudzat catalogue…

Interactive decision tool

Find the right Exos starting point

Use the workload, enclosure and interface inputs to identify a sensible Exos generation and capacity range.

Available interface Installation environment Required capacity per drive (TB) Security requirement Main priority

Why exact Exos models matter

The same capacity can appear in several Exos generations and in both SATA and SAS. A listing that says only “Exos 20TB” does not tell you whether it is X20, X22 or X24, whether it uses SATA or SAS, or whether it is a standard, ISE or SED variant.

Choose the controller interface first

SATA models work with ordinary SATA controllers and most NAS appliances. SAS models require a SAS HBA, RAID controller or compatible backplane. A passive cable cannot make a SATA-only controller communicate with a SAS drive.

Understand generation overlap

X16, X18, X20 and X22 remain widely available even though X24 and Exos M are newer. Older does not automatically mean unsuitable, but comparisons must use the exact model, warranty source and current price.

Sector format can affect compatibility

Many Exos drives support FastFormat between 512e and 4Kn. The host, operating system and storage appliance must support the selected format. Changing format is destructive and should never be attempted without a verified backup.

Security variants are not interchangeable labels

ISE, SED and FIPS-capable models use different exact model numbers. A self-encrypting drive may also require controller or management support before its security features provide operational value.

Enterprise acoustics and cooling

Exos drives are designed for dense enterprise environments. They can be louder and may have different power and vibration characteristics than consumer or NAS-focused drives. Cooling and chassis isolation matter in a home installation.

New versus recertified listings

This commercial authority catalogue accepts only new single internal drives. Factory-recertified and seller-refurbished Exos products belong in a separate buying-risk guide because their warranty length and seller responsibility differ.

Use the existing Exos price engine

Cloudzat’s existing Seagate Exos prices page remains the central live price-per-terabyte resource. These authority pages add generation, interface and exact-model context around that price data.

How Cloudzat evaluates Exos drives

Cloudzat attaches generation, interface, sector format, security class, recording technology, cache, transfer rate and warranty only to an exact model. Exos X16, X18, X20, X22, X24 and Exos M remain separate, as do IronWolf Pro and WD Gold comparison products. This prevents a SATA listing from inheriting SAS specifications or an Exos M drive from inheriting X24 data.

Live offers are screened for new single internal 3.5-inch drives and matched to an exact model. SATA and SAS are kept separate. SSDs, external drives, accessories, enclosures, servers, multipacks, MACH.2, Exos Xz host-managed SMR, other drive families and non-new listings are rejected. Warranty source and delivered-label verification remain essential.

Frequently asked questions

Seagate Exos buying questions

Can I use a Seagate Exos drive in a NAS?

Usually yes when the NAS supports the drive’s interface, capacity and sector format. Confirm the NAS compatibility list and cooling before purchase.

Is Exos always SATA?

No. Many Exos families include both SATA and SAS models. The exact model number determines the interface.

Is every Exos drive CMR?

No. The normal X-series and current Exos M models tracked here are CMR or HAMR-CMR, but specialist Exos Xz products use host-managed SMR and require a compatible software stack.

Why are some Exos drives cheaper than NAS drives?

Enterprise channel pricing, OEM inventory and recertified stock can make Exos appear cheaper. Compare condition, interface, warranty source, noise and included recovery services rather than price alone.

Does Exos include Rescue Data Recovery Services?

Exos warranty and service bundles differ from IronWolf Pro. Do not assume Rescue coverage unless the exact product and region state it.

What should I verify on delivery?

Check the exact model, capacity, interface, condition, serial number, seller and warranty status before installing data.

Primary sources

Cloudzat may earn a commission from qualifying purchases. Product availability, pricing and specifications can change. Confirm the exact Exos model, generation, interface, sector format, security variant, seller, condition and regional warranty route before buying.