Seagate IronWolf® 125 Pro SSD 2.5″ 3.48TB SATA Solid State Drive (ZA3840NX1A001)


Seagate IronWolf® 125 Pro SSD 2.5″ 3.48TB SATA Solid State Drive – Retail Pack (ZA3840NX1A001)

SKU: ZA3840NX1A001
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Powerful SSDs Built for NAS

Seagate IronWolf® SSDs are built for NAS and offer capacities ranging from 240 GB to 4 TB. Each drive includes AgileArray™ firmware to keep your NAS enclosure maximised for demanding 24×7 and multi-user environments, and can be used in an all-flash array (AFA) or in a NAS capable of tiered caching.

Amplify the Impact of Your Business’s Data

If your business relies on multiple users and an all-flash array system, tap into the power of Synology FS3017 equipped with IronWolf 110 for sustained data rates up to 560 MB/s and begin harnessing more data — all day, every day. For NAS capable of caching or tiered storage, combine the IronWolf 110 or 125 Pro SATA with an IronWolf 510 M.2 NVMe.

Go Hybrid With HDD Space and SSD Cache

If you want it all — fast caching, max capacity, incredible endurance, and minimal cost — then it’s time to go hybrid. Thanks to an IronWolf portfolio that includes both HDDs and SSDs, you can easily take your compatible NAS system, such as the QNAP TVS-951X, to the heights of comprehensive performance.

Additional information

Weight 0.16783 kg
SSD form factor


Mean time between failures (MTBF)

2000000 h

Storage temperature (T-T)

-40 – 85 °C

Operating temperature (T-T)

0 – 70 °C

Power consumption (idle)

1.9 W

Power consumption (max)

5 W

Operating voltage

5 V

Linux operating systems supported


Mac operating systems supported


Windows operating systems supported


Random write (4KB)

30000 IOPS

SSD capacity

3840 GB

Random read (4KB)

96000 IOPS

Data transfer rate

6 Gbit/s

Write speed

520 MB/s

Read speed

545 MB/s

Component for




Memory type



Serial ATA III




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