Designed for use in RAID or NAS arrays with 1 to 8 drive bays, the 20TB N300 7200 rpm SATA III 3.5" Internal NAS HDD from Toshiba meets the reliability, performance, endurance, and scalability requirements of 24/7 NAS applications for personal, home office, and small business use. This 20TB drive operates using a SATA III 6 Gb/s interface, a 512MB cache, and a rotational speed of 7200 rpm, all of which help to ensure uninterrupted data transfers with a rate of up to 281 MB/s. This drive also features high levels of reliability, with 300,000 load/unload cycles, 1 in 10¹⁵ non-recoverable read errors per bits read, a workload rate of up to 180TB per year, and a 1.2 million hour MTTF. Shock protection is provided by a rotational vibration sensor, while ramp loading helps reduce wear and Error Recovery Control limits recovery time to help optimize error correction.

20TB Storage Capacity per Drive    3.5" Form Factor    SATA III 6 Gb/s Interface    512MB Cache    7200 rpm Rotational Speed    Up to 281 MB/s Data Transfer Speeds    24/7 Operation    Supports Arrays with 1 to 8 Drive Bays    1.2 Million Hour MTTF    Workload Rate up to 180TB per Year

• 1 to 8-bay NAS arrays
• Desktop RAID arrays and servers
• Multimedia server storage

• Supports multi-RAID systems with up to 8 bays
• Designed for 24/7 operations with a workload rate of up to 180TB per year

• Integrated RV sensors help ensure high reliability against shock and vibrations by detecting and minimizing rotational vibration effects in multi-bay NAS systems

• On-board cache algorithm and buffer management optimize cache allocation between read and write cycles for improved real-time drive performance

• A 512MB data buffer ensures high performance and fast read speed during data intensive operation
• Fast data transfer speeds of up to 281 MB/s provides quick access to essential content

• Ramp loading technology reduces wear to the recording head and media for improved drive reliability
• Error Recovery Control technology limits recovery time to help optimize error correction in RAID environments

• The drive automatically adjusts the seek speed when it reaches a critical temperature to help reduce heat buildup during high temperature operations

• High reliability with an MTTF of up to 1.2 million hours
• Limited 3-year warranty

Related Questions and Answers

Q: 1. Are these drives new or reconditioned?

A: All items on the site are new unless specifically marked used or refurbished. 

Q: 2. re: B&H #SEST18000NE0. Is "17200 rpm" a typo?

A: The Seagate 18TB IronWolf Pro 7200 rpm SATAIII Internal NAS HDD (CMR) BH #SEST18000NE0 is a 7200rpm drive. The error has been reported and should be updated as soon as possible.

Q: 3. If I replace the WD Red NAS 5400 RPM drives in a My Cloud EX2 Ultra with these, how much of a performance difference can I reasonably expect to see?

A: Almost no difference, unless you're using these drives as regular OS drives, where application read/write speed is more critical. If building a NAS I would recommend 5400s, the read speed is fine for streaming, they last longer than 7200s on average, and they're usually cheaper. I got these 7200 at a great price, so it made sense for me at the time.

Q: 4. Are Western Digital NAS drives compatible with the Lacie Big 5 NAS system? Thanks

A: Yes, theses drives would work with the Lacie Big 5

Q: 5. I have a 920DS+ and need to purchase larger HDDs. What is the benefit of the Seagate 10TB IronWolf Pro 7200 rpm vs the non pro?

A: The Ironwolf Pro line features several upgrades such as a 2 million hour TBF rating (as opposed to 1 million hours) and a data transfer rate of up to 263 MB/s (as opposed to up to 210 MB/s).

Q: 6. Is it compatible with QNAP 473A?

A: This drive SEST16000NE0 is compatible with with a Qnap TS-473A.

Q: 7. Is it compatible with newly launched Synology DS923+ as it's not in the Synology compatibility list? It's compatible with many older models but why not the new one.

A: No, Synology has not qualified the Seagate 16TB IronWolf Pro 7200 rpm SATA III 3.5" Internal NAS HDD (CMR, OEM) BH #SEST16000NE0 at this time.

Q: 8. Will this drive work with Synolgy DS720+?

A: Yes, the Seagate 6TB IronWolf Pro 7200 rpm SATA III 3.5" Internal NAS HDD (CMR, Retail) BH #SEST6000N000 is compatible with the Synology DS720+.

Q: 9. Will this drive work with a SABRENT USB 3.0 SATA I/II/III bay?

A: You can use this Ironwolf drive in a Sabrent 3.5" enclosure BH #SAECKSL3.

Q: 10. So the price difference between the OEM and Retail versions is only for the box?

A: The price difference of a OEM and the retail version is just going to be for the box. You either receive the full item in it's retail box or just the drive itself.