Seagate 20TB IronWolf Pro 7200 rpm SATA III 3.5" Internal NAS HDD (CMR) Review
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Our editorial take on the Seagate 20TB IronWolf Pro 7200 rpm SATA III 3.5" Internal NAS HDD (CMR)
The Seagate IronWolf Pro 20TB drive solidly establishes itself as a go-to solution for serious NAS users who prioritize massive capacity and consistent performance. This is not a drive for a casual desktop setup. It's engineered specifically for the rigors of 24/7 operation inside multi-bay NAS enclosures, utilizing Conventional Magnetic Recording (CMR) technology to ensure reliable performance in demanding RAID configurations. For creative professionals, small businesses, or data-heavy prosumers, the ability to consolidate storage and maximize bay capacity with these drives is a significant advantage.
Performance is impressive, with the 7200 rpm spindle speed delivering the fast, sustained transfer rates necessary for tasks like direct video editing or managing huge photo libraries across a network. This performance comes with predictable trade-offs, namely higher operational noise and heat output compared to slower, lower-capacity drives, which is a standard consideration for any high-performance array. What truly sets the Pro line apart is the included peace of mind. Seagate's complimentary multi-year Rescue Data Recovery Services and robust workload rating offer a level of assurance that aligns perfectly with the mission-critical data these drives are intended to store.
- Massive 20TB capacity maximizes storage density
- Excellent sustained transfer speeds for large files
- Uses reliable CMR technology, ideal for RAID arrays
- Built for high-workload, 24/7 NAS environments
- Includes two years of Rescue Data Recovery Services
- Premium price point compared to smaller drives
- Runs hotter and louder than 5400 rpm alternatives
- Power consumption is higher than lower-capacity models
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About this product
The Seagate 20TB IronWolf Pro is an internal NAS HDD designed for multi-bay, multi-user RAID and NAS environments. It features a SATA III 6 Gb/s interface, a rotational speed of 7200 rpm, and a 256MB cache, offering ample storage capacity with data transfer speeds up to 285 MB/s. This drive is built for 24/7 operation and boasts a 2.5 million hours MTBF.
Specs
- Weight
- 1.5 lb / 670 g
- Dimensions
- 5.79 x 4.01 x 1.03" / 146.99 x 101.85 x 26.11 mm
- Drive Type
- SATA III / 3.5" HDD (7200 rpm)
- Input Power
- 12 VDC at 2 A
- Operating Shock
- 40 G / 2.0 ms
- Power Draw Idle
- 5.5 W
- Power Draw Active
- 7.7 W
- Encryption Support
- No
- Power Draw Standby
- 1.0 W
- Read Speed Maximum
- 285 MB/s
- Storage Conditions
- -40 to 158°F / -40 to 70°C
- Write Speed Maximum
- 285 MB/s
- Operating Conditions
- 32 to 97°F / 0 to 65°C
- Total Installed Storage
- 20 TB
- Endurance (Total Bytes Written)
- 550 TB
- Mean Time Between Failures (Mtbf)
- 2.5 Million Hours
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