Seagate Exos 20TB 7.2K RPM SATA 6Gb/s 3.5in Enterprise HDD ST20000NM002C (Renewed)
Want the best price and purchase timing?
Our AI advisor analyzes real-time pricing across all channels to find you the best deal.
AI Verdict
This is a 20TB, 7,200 RPM, SATA 6Gb/s 3.5-inch mechanical hard disk, renewed for large-scale data storage in enterprise or server environments.
This 20TB Exos drive is a situational fit for those needing vast storage at a lower price point, specifically for enterprise or server applications where its 7,200 RPM and SATA 6Gb/s interface are adequate. However, its 'renewed' status introduces a risk of receiving a faulty unit, making thorough testing upon receipt mandatory.
If you need guaranteed reliability and a full manufacturer warranty without the 'renewed' risk, look for a new enterprise-grade HDD or consider a solid-state drive (SSD) for significantly faster performance.
Regret Score™
High RiskLower is better — measures purchase-regret risk from real buyer complaints, review credibility, and product maturity
Issues discovered after purchase
Critically weak dimension
Amazon rating vs actual quality
Chance this product isn't for you
Pros
- Offers a massive 20 TB storage capacity for extensive data needs.
- Features a 7,200 RPM spindle speed for optimal performance in a mechanical drive.
- Utilizes a SATA 6Gb/s interface for efficient data transfer rates.
- Designed with a standard 3.5-inch form factor, ensuring compatibility with most enterprise systems.
- Engineered for 24/7 operation, indicating suitability for continuous use in demanding environments.
Cons
- As a 'renewed' product, there's an inherent risk of receiving a drive with prior usage or potential defects.
- Some users have reported receiving units that failed SMART tests or were dead on arrival.
- The 'renewed' status means the warranty and support might differ from a new, factory-sealed drive.
- Mechanical hard drives, even enterprise-grade, are slower than solid-state drives for random access and boot times.
- One user experienced a renewed drive causing their NAS to not boot and a USB dock to malfunction.
Dimension Scores
The 7,200 RPM spindle speed and SATA 6Gb/s interface provide above-average sequential read/write speeds for a mechanical hard drive, suitable for large file transfers.
While the Exos series is designed for enterprise-grade reliability, the 'renewed' status introduces uncertainty, with some users reporting drives failing SMART tests or being DOA.
A 20TB capacity is among the highest available for a single 3.5-inch hard drive, making it best-in-class for sheer storage volume.
The standard 3.5-inch form factor and SATA 6Gb/s interface ensure broad compatibility with desktop and server systems, making it highly adaptable.
Best For
- Large-scale data archiving and backup solutions.
- Network-attached storage (NAS) systems requiring high capacity.
- Server environments needing extensive, cost-effective storage.
- Mission-critical applications where continuous operation is essential, provided the drive passes initial testing.
Not Recommended For
- Users who require the absolute fastest storage for operating systems or frequently accessed applications.
- Individuals unwilling to risk potential issues associated with 'renewed' hardware.
- Anyone needing a brand-new drive with a full manufacturer's warranty.
Watch Out For
- Receiving a drive that fails SMART diagnostics or is dead on arrival, as one user reported 1 of 2 drives failing out of the box with read errors and spinup retries.
- A renewed drive potentially causing system instability, such as preventing a NAS from booting or a USB dock from working.
- Uncertainty regarding the drive's previous operational hours or specific usage history, despite some sellers claiming 'zero hours' on recertified units.
- The warranty for renewed products may be limited compared to new drives, requiring careful review of seller terms.
Full Specifications
| ASIN | B0F9ZXDHDH |
| Brand | Seagate |
| Series | Exos |
| Hard Drive | 20 TB Mechanical Hard Disk |
| Item Weight | 1.85 pounds |
| Manufacturer | Seagate |
| Hard Disk Size | 20 TB |
| Special Feature | Hot Swappable |
| Hardware Platform | PC |
| Installation Type | Internal Hard Drive |
| Item model number | 724129275582 |
| Compatible Devices | Desktop, Server |
| Package Dimensions | 8.7 x 5.98 x 2.95 inches |
| Hard Disk Interface | Serial ATA-600 |
| Hard Drive Interface | Serial ATA-600 |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Disk Form Factor | 3.5 Inches |
| Connectivity Technology | SATA |
| Digital Storage Capacity | 20 TB |
| Hard Drive Rotational Speed | 7200 RPM |
What Buyers Say
The biggest takeaway from user feedback is the mixed bag you get with 'renewed' enterprise drives; while some users report drives working perfectly out of the box, others hit significant snags. One user specifically mentioned that out of two drives purchased, one failed SMART tests immediately with read errors and spinup retries, and the other was completely non-functional, even causing their NAS to fail booting. This highlights the necessity of rigorous testing upon receipt. Despite these issues, the high capacity and enterprise features are appealing for the price point, but the 'renewed' gamble is real.
“Man, I took a chance on these renewed drives for my NAS and one of them was totally dead, wouldn't even let my system boot up, and the other one was throwing SMART errors right out of the box. What a headache, had to send 'em back.”
Common Praise
- Provides a massive 20TB of storage capacity.
- Some units work perfectly and are recognized without issue upon installation.
- Offers a cost-effective way to acquire high-capacity enterprise storage.
- The 7,200 RPM performance is adequate for large data storage and access.
- Suitable for NAS and server applications due to its design for continuous operation.
Common Complaints
- Receiving drives that are dead on arrival or fail SMART tests immediately.
- One drive caused a NAS to not boot and a USB dock to malfunction.
- Concerns about the true 'zero hours' claim on recertified drives.
- The 'renewed' nature means a higher risk of early failure compared to new drives.
- Potential for unexpected noise levels, though user experiences vary.
Ownership Tips
- Immediately run extensive SMART tests and a full surface scan on any renewed drive to check for latent issues.
- Be prepared for potential returns or exchanges if the drive doesn't pass initial diagnostics.
- Consider purchasing multiple drives if building a RAID, as the failure rate on renewed units can be higher.
- Keep original packaging for easier returns if a drive is faulty.
- Monitor drive temperatures and SMART data regularly, especially during the initial weeks of operation.
Frequently Asked Questions
What does 'renewed' mean for this hard drive?
A 'renewed' hard drive has been inspected, tested, and restored to full working condition. It's not brand new, and its prior usage history can vary, which is why some users report issues like drives failing SMART tests or being DOA.
Is a 'renewed' enterprise drive suitable for a home NAS?
Yes, a renewed enterprise drive like this 20TB Exos can be suitable for a home NAS due to its high capacity and 24/7 operation design. However, be prepared to thoroughly test the drive upon arrival, as some users have received faulty units.
How does the 7,200 RPM speed compare to other drives?
A 7,200 RPM spindle speed is standard for performance-oriented mechanical hard drives, offering faster data access than slower 5,400 RPM drives. It's significantly slower than solid-state drives (SSDs) for overall system responsiveness.
What kind of warranty comes with a renewed drive?
The warranty for renewed drives typically comes from the seller or a third-party refurbisher, not the original manufacturer. It's crucial to check the specific warranty terms provided by Amazon Renewed or the individual seller for this product.
Will this drive be noisy?
Enterprise drives can sometimes be louder than consumer drives due to their robust construction and higher performance. While one Reddit user reported their renewed Exos drives sounded similar to 'normal drives', individual experiences with noise levels can vary.
Buying Guide
When you're looking at a hard drive, especially a 'renewed' one like this, you need to think about what you're actually storing and how often you'll access it. This isn't for your operating system or games. It's for huge amounts of data you want to keep for a long time. The 'renewed' part means you're getting a deal, but you're also taking on some risk, so testing it thoroughly when it arrives is non-negotiable.
Capacity (20 TB)
This is how much data the drive can hold, like a giant digital warehouse. 20 terabytes is massive, enough for thousands of movies or millions of documents, making it ideal for long-term storage rather than active, everyday files.
RPM (7,200 Revolutions Per Minute)
This tells you how fast the platters inside the drive spin, directly affecting how quickly data can be read or written. Think of it like a record player; faster spinning means the needle (read/write head) can find and access information more rapidly than a slower 5,400 RPM drive.
Interface (SATA 6Gb/s)
This is the connection standard the drive uses to talk to your computer. SATA 6Gb/s is the current standard for mechanical hard drives, providing enough bandwidth for the drive's speed. It's like the highway connecting your storage to your computer's brain; a wider highway means data moves more freely.
Drive Type (Mechanical Hard Disk)
This means it has spinning platters and moving read/write heads, unlike a solid-state drive (SSD) which uses flash memory. Mechanical drives offer much higher capacity for the money but are slower and more susceptible to physical shock than SSDs.
Alternatives
If you need faster performance for frequently accessed data or operating systems, look for solid-state drives (SSDs) with NVMe interfaces. If you need guaranteed new condition and full manufacturer warranty, search for new enterprise-grade HDDs from reputable brands.
You Might Also Like
Seagate IronWolf Pro SATA III 3.5" Internal NAS Hard Drive, 2-Pack - 8TB
$300-$599A 2-pack of 8TB 7200 RPM CMR internal hard drives with 256MB cache, built for 24/7 multi-bay NAS environments.
QNAP TS-453E-8G-US 4 Bay High-Performance Desktop NAS with Intel Celeron Quad-core Processor, 8 GB DDR4 RAM and Dual 2.5GbE (2.5G/1G/100M) Network Connectivity (Diskless)
$600+A 4-bay diskless NAS with an Intel Celeron J6412, 8GB DDR4 RAM, dual 2.5GbE, and M.2 NVMe slots for businesses needing long-term support.
Seagate Exos 28TB Internal Hard Drive HDD - 3.5 in CMR SATA 6Gb/s, 7200 RPM, 512MB Cache, 2.5M MTBF - ST28000NM000C (Renewed)
$300-$599This 28TB, 7200 RPM, 3.5-inch CMR SATA 6Gb/s renewed hard drive is for serious data hoarders needing massive capacity at a lower price point.
1TB G-Drive ArmorATD Rugged, Durable Portable External HDD, Up to 130MB/s, USB-C (5Gbps), USB 3.2 Gen 1 – SDPHE1G-001T
$50-$99A 1TB mechanical hard drive with a 130MB/s read speed and USB-C (5Gbps) connectivity, built for users needing rugged, portable storage for school or creative projects.