What’s the difference between the IronWolf 110, IronWolf 125 and IronWolf Pro 125?

Seagate has three similar network-attached storage drives currently available. So, what are the main differences between the IronWolf 110, IronWolf 125 and IronWolf Pro 125?

You can find out in this comparison guide for the three NAS SSDs.

Quick Summary

When compared to the Seagate IronWolf 110 and Seagate IronWolf Pro 125, the Seagate IronWolf 125 has the better maximum sequential writing speed and better maximum random writing speed.

The IronWolf 110 and IronWolf 125 are tied with having the best maximum sequential reading speed.

The higher capacity options of the IronWolf Pro 125 do beat out the IronWolf 125, as well as the IronWolf 110, at maximum random reading.

The IronWolf 110 and IronWolf Pro 125 are the only two to come with power data loss protection while the IronWolf 125 and IronWolf Pro 125 have longer rescue data recover services coverage than the IronWolf 110.

Last but not least, the IronWolf 110 and IronWolf Pro 125 has better reliability and endurance when compared to the IronWolf 125.

IronWolf 110 vs. IronWolf 125 vs. IronWolf Pro 125 Comparison Chart

You can take a look at Seeking Tech’s comparison table for the NAS SSDs below.

Capacity Option

You can check out the available capacity options for all three versions of the Iron Wolf below:

IronWolf 110:

• 240GB
• 480GB
• 960GB
• 1.92TB
• 3.84TB

IronWolf 125:

• 250GB
• 500GB
• 1TB
• 2TB
• 4TB

IronWolf Pro 125:

• 240GB
• 480GB
• 960GB
• 1.92TB
• 3.84TB

Model Number

You can also find the model number for each capacity for all three NAS storage drives below:

IronWolf 110:

• 240GB: ZA240NM10001
• 480GB: ZA480NM10001
• 960GB: ZA960NM10001
• 1.92TB: ZA1920NM10001
• 3.84TB: ZA3840NM10001

IronWolf 125:

• 250GB: ZA250NM10002
• 500GB: ZA500NM10002
• 1TB: ZA1000NM10002
• 2TB: ZA2000NM10002
• 4TB: ZA4000NM10002

IronWolf Pro 125:

• 240GB: ZA240NX10001
• 480GB: ZA480NX10001
• 960GB: ZA960NX10001
• 1.92TB: ZA1920NX10001
• 3.84TB: ZA3840NX10001

Weight

When it comes to weight, the IronWolf 110 is the heaviest of the group while the IronWolf Pro 125 is the second heaviest. The IronWolf 125 is the lightest.

You can find the weight specifications below:

• 240GB IronWolf 110: 75 g (or 0.165 lb.)
• 480GB IronWolf 110: 75 g (or 0.165 lb.)
• 960GB IronWolf 110: 77 g (or 0.169 lb.)
• 1.92TB IronWolf 110: 77 g (or 0.169 lb.)
• 3.84TB IronWolf 110: 82 g (or 0.180 lb.)

• 250GB IronWolf 125: 50 g (or 0.110 lb.)
• 500GB IronWolf 125: 50 g (or 0.110 lb.)
• 1TB IronWolf 125: 50 g (or 0.110 lb.)
• 2TB IronWolf 125: 50 g (or 0.110 lb.)
• 4TB IronWolf 125: 50 g (or 0.110 lb.)

• 240GB IronWolf Pro 125: 55 g (or 0.121 lb.)
• 480GB IronWolf Pro 125: 56 g (or 0.123 lb.)
• 960GB IronWolf Pro 125: 59 g (or 0.130 lb.)
• 1.92TB IronWolf Pro 125: 60 g (or 0.132 lb.)
• 3.84TB IronWolf Pro 125: 62 g (or 0.136 lb.)

Dimensions

The IronWolf 125 and IronWolf Pro 125 are identical when it comes to physical size, both of which are also very similar to the IronWolf 110.

You can find the measurements for all three below:

• IronWolf 110: 7.00 mm x 70.10 mm x 100.25mm (or 0.276 in x 2.760 in x 3.947 in)
• IronWolf 125: 7.10 mm x 70.10 mm x 100.35 mm (or 0.279 in x 2.759 in x 3.950 in)
• IronWolf Pro 125: 7.10 mm x 70.10 mm 100.35 mm (0.279 in x 2.760 in x 3.950 in)

Form Factor

The three SSDs utilize the same form factor of 2.5 in × 7mm.

Interface

All the solid state drives in this versus showdown use the SATA 6Gb/s interface.

Non-Recoverable Read Errors Per Bits Read

The IronWolf 110, IronWolf 125 and IronWolf Pro 125 have the same non-recoverable read errors per bits read at 1 per 10E17.

Power Loss Data Protection

The IronWolf 110 and IronWolf Pro 125 come with power loss data protection while the IronWolf 125 doesn’t.

Maximum Sequential Read Speed (128KB, QD32)

The IronWolf 110 and IronWolf 125 are tied with having the best maximum sequential reading speeds. Both are 15 MB per second faster, or 2.75% faster, than the IronWolf Pro 125.

You can find the max sequential read speed specifications below:

• 240GB IronWolf 110: Up to 560 MB per second
• 480GB IronWolf 110: Up to 560 MB per second
• 960GB IronWolf 110: Up to 560 MB per second
• 1.92TB IronWolf 110: Up to 560 MB per second
• 3.84TB IronWolf 110: Up to 560 MB per second

• 250GB IronWolf 125: Up to 560 MB per second
• 500GB IronWolf 125: Up to 560 MB per second
• 1TB IronWolf 125: Up to 560 MB per second
• 2TB IronWolf 125: Up to 560 MB per second
• 4TB IronWolf 125: Up to 560 MB per second

• 240GB IronWolf Pro 125: Up to 545 MB per second
• 480GB IronWolf Pro 125: Up to 545 MB per second
• 960GB IronWolf Pro 125: Up to 545 MB per second
• 1.92TB IronWolf Pro 125: Up to 545 MB per second
• 3.84TB IronWolf Pro 125: Up to 545 MB per second

Maximum Sequential Write Speed (128KB, QD32)

The IronWolf 125 comes out on top when it comes to maximum sequential writing.

When you compare the same or similar capacities, the 250GB IronWolf 125 is 180 MB per second faster (or 50% faster) than the 240GB IronWolf Pro 125 and 310 MB per second faster (or 134.78% faster) than the 240GB IronWolf 110.

The 500GB IronWolf 125 is 40 MB per second faster (or 8% faster) than the 480GB IronWolf Pro 125 and 55 MB per second faster (or 11.34% faster) than the 480GB IronWolf 110.

The 1TB, 2TB and 4TB versions of the IronWolf 125 are 20 MB per second faster (or 3.85% faster) than 960GB, 1.92TB and 3.84TB versions of the IronWolf Pro 125 as well as 5 MB per second faster (or 0.93% faster) than the 960GB, 1.92TB and 3.84TB versions of the IronWolf 110.

You can find the max sequential write speeds below:

• 240GB IronWolf 110: Up to 230 MB per second
• 480GB IronWolf 110: Up to 485 MB per second
• 960GB IronWolf 110: Up to 535 MB per second
• 1.92TB IronWolf 110: Up to 535 MB per second
• 3.84TB IronWolf 110: Up to 535 MB per second

• 250GB IronWolf 125: Up to 540 MB per second
• 500GB IronWolf 125: Up to 540 MB per second
• 1TB IronWolf 125: Up to 540 MB per second
• 2TB IronWolf 125: Up to 540 MB per second
• 4TB IronWolf 125: Up to 540 MB per second

• 240GB IronWolf Pro 125: Up to 360 MB per second
• 480GB IronWolf Pro 125: Up to 500 MB per second
• 960GB IronWolf Pro 125: Up to 520 MB per second
• 1.92TB IronWolf Pro 125: Up to 520 MB per second
• 3.84TB IronWolf Pro 125: Up to 520 MB per second

Maximum Random Read Speed (4KB, QD32)

Aside from the smallest capacity, the IronWolf Pro 125 has the best maximum random reading speeds.

The 250GB IronWolf 125 does beat out the 240GB IronWolf Pro 125 by being 5,000 IOPS faster (or 5.56% faster). The 250GB IronWolf 125 is also 40,000 IOPS faster (or 72.73% faster) than the 240GB IronWolf 110.

The 480GB, 960GB, 1.92TB and 3.84TB IronWolf Pro 125 SSDs are 1,000 IOPS faster (or 1.05% faster) than the 500GB, 1TB, 2TB and 4TB IronWolf 125 SSDs.

The 480GB IronWolf Pro 125 is also 16,000 IOPS faster (or 20% faster) than the 480GB IronWolf 110.

Furthermore, the 960GB and 1.92TB capacities of the IronWolf Pro 125 are 6,000 IOPS faster (or 6.67% faster) than the 960GB and 1.92TB capacities of the IronWolf 110.

Lastly, the 3.84TB IronWolf Pro 125 is 11,000 IOPS faster (or 12.94% faster) than the 3.84TB IronWolf 110.

You can take a look at the random read specs below:

• 240GB IronWolf 110: Up to 55,000 IOPS
• 480GB IronWolf 110: Up to 80,000 IOPS
• 960GB IronWolf 110: Up to 90,000 IOPS
• 1.92TB IronWolf 110: Up to 90,000 IOPS
• 3.84TB IronWolf 110: Up to 85,000 IOPS

• 250GB IronWolf 125: Up to 95,000 IOPS
• 500GB IronWolf 125: Up to 95,000 IOPS
• 1TB IronWolf 125: Up to 95,000 IOPS
• 2TB IronWolf 125: Up to 95,000 IOPS
• 4TB IronWolf 125: Up to 95,000 IOPS

• 240GB IronWolf Pro 125: Up to 90,000 IOPS
• 480GB IronWolf Pro 125: Up to 96,000 IOPS
• 960GB IronWolf Pro 125: Up to 96,000 IOPS
• 1.92TB IronWolf Pro 125: Up to 96,000 IOPS
• 3.84TB IronWolf Pro 125: Up to 96,000 IOPS

Maximum Random Write Speed (4KB, QD32)

The IronWolf 125 is the clear winner of the three when it comes to maximum random writing.

The 250GB IronWolf 125 is 82,000 IOPS faster (or 1025% faster) than the 240GB IronWolf 110 and 78,000 IOPS faster (or 650% faster) than the 240GB IronWolf Pro 125.

The 500GB IronWolf 125 is 75,000 IOPS faster (or 500% faster) than the 480GB IronWolf 110 and 74,000 IOPS faster (or 462.5% faster) than the 480GB IronWolf Pro 125.

The 1TB IronWolf 125 is 70,000 IOPS faster (or 350% faster) than the 960GB IronWolf 110 and 65,000 IOPS faster (or 260% faster) than the 960GB IronWolf Pro 125.

The 2TB and 4TB versions of the IronWolf 125 are 70,000 IOPS faster (or 350% faster) than the 1.92TB and 3.84TB versions of the IronWolf 110 as well as 60,000 IOPS faster (or 200% faster) than the 1.92TB and 3.84TB versions of the IronWolf Pro 125.

You can find the random write speeds below:

• 240GB IronWolf 110: Up to 8,000 IOPS
• 480GB IronWolf 110: Up to 15,000 IOPS
• 960GB IronWolf 110: Up to 20,000 IOPS
• 1.92TB IronWolf 110: Up to 20,000 IOPS
• 3.84TB IronWolf 110: Up to 20,000 IOPS

• 250GB IronWolf 125: Up to 90,000 IOPS
• 500GB IronWolf 125: Up to 90,000 IOPS
• 1TB IronWolf 125: Up to 90,000 IOPS
• 2TB IronWolf 125: Up to 90,000 IOPS
• 4TB IronWolf 125: Up to 90,000 IOPS

• 240GB IronWolf Pro 125: Up to 12,000 IOPS
• 480GB IronWolf Pro 125: Up to 16,000 IOPS
• 960GB IronWolf Pro 125: Up to 25,000 IOPS
• 1.92TB IronWolf Pro 125: Up to 30,000 IOPS
• 3.84TB IronWolf Pro 125: Up to 30,000 IOPS

Reliability

When it comes to reliability, both the IronWolf 110 and IronWolf Pro 125 have a Mean Time Between Failures (MTBF) of 2,000,000 hours, which is 200,000 hours longer (or 11.11% longer) than the IronWolf 125.

Endurance

The IronWolf 110 are identical when it comes to endurance as the two solid state drives have the same Terabytes Writes specs, both of which beat out the IronWolf 125.

When you compare the same or similar capacities, the 240GB IronWolf 110 and IronWolf Pro 125 can write 125 TB more data (or 45% more) than the 250GB IronWolf 125.

The 480GB IronWolf 110 and IronWolf Pro 125 can write 175 TB more data (or 25% more) than the 500GB IronWolf 125.

The 960GB IronWolf 110 and IronWolf Pro 125 can write 350 TB more data (or 25% more) than the 1TB IronWolf 125.

The 1.92TB IronWolf 110 and IronWolf Pro 125 can write 700 TB more data (or 25% more) than the 2TB IronWolf 125.

The 3.84TB IronWolf 110 and IronWolf Pro 125 can write 1400 TB more data (or 25% more) than the 2TB IronWolf 125.

You can check out the TBW specs below:

• 240GB IronWolf 110: 435 TBW
• 480GB IronWolf 110: 875 TBW
• 960GB IronWolf 110: 1750 TBW
• 1.92TB IronWolf 110: 3500 TBW
• 3.84TB IronWolf 110: 7000 TBW

• 250GB IronWolf 125: 300 TBW
• 500GB IronWolf 125: 700 TBW
• 1TB IronWolf 125: 1400 TBW
• 2TB IronWolf 125: 2800 TBW
• 4TB IronWolf 125: 5600 TBW

• 240GB IronWolf Pro 125: 435 TBW
• 480GB IronWolf Pro 125: 875 TBW
• 960GB IronWolf Pro 125: 1750 TBW
• 1.92TB IronWolf Pro 125: 3500 TBW
• 3.84TB IronWolf Pro 125: 7000 TBW

Rescue Data Recovery Services

When it comes to the rescue data recover services, the IronWolf 125 and IronWolf Pro 125 are both covered for 3 years while the IronWolf 110 is covered for 2 years.

Warranty

The Seagate IronWolf 110 NAS Internal Solid State Drive, Seagate IronWolf 125 NAS Internal Solid State Drive and Seagate IronWolf Pro 125 NAS Internal Solid State Drive each comes with a 5-year limited warranty.

Resources:

• https://www.seagate.com/www-content/datasheets/pdfs/ironwolf-110-ssd-DS1998-5-2010US-en_US.pdf
• https://www.seagate.com/www-content/datasheets/pdfs/ironwolf-125-ssd-DS2052-2-2011US-en_US.pdf
• https://www.seagate.com/www-content/datasheets/pdfs/ironwolf-pro-125-ssd-DS2053-2-2011US-en_US.pdf