We should mention that this definition of workload isn’t unique to Seagate, it’s the same for Western Digital drives, and their workload amounts aren’t different for the Red Pro 20TB. Recovery. In the event of failure, rely on a secure environment for data recovery with Seagate® Rescue Data Recovery Service (2-year service included with IronWolf Pro). Seagate's IronWolf comes in eight different capacities, and that's not counting the IronWolf Pro lineup. Seagate only uses helium with the two highest capacities, while the 6TB to 12TB models are the only drives with a 7,200-RPM spindle speed. Those models also have the best UBER (uncorrectable bit error) rating. Rotational vibration (RV) sensors are the biggest dividing line for the IronWolf series. The 3TB, 2TB, and 1TB drives don't come with RV sensors, which can hamper performance in a large array.

Should the drive fail after exceeding these workload limits, Seagate can reject warranty replacement accordingly. There is one aspect to the IronWolf Pro 20TB that concerns us, and it’s the 300TB per year workload definition.Talking about the outside of the Seagate IronWolf Pro 20TB is mainly irrelevant. Externally, it appears to be identical to every other Seagate IronWolf drive in the 3.5-inch form factor. Alongside its IronWolf Pro, Seagate also makes a 20TB EXOS design that we’ll be covering shortly, aimed at the same slice of the Enterprise market that the UltraStar DC HC560 was created. Oddly, while idle, the 20TB pulls a little more power than the 18TB, 5.5W from 5.2W, but critically when it is running, it uses less power. Down from 8W on the 18TB to 7.7W on the 20TB, its standby power level is also less.

AgileArray also features optimized power management that provides a faster response time while also reducing power consumption. Pricing, Warranty & Endurance Pet Habitats and Supplies, Apparel and Leashes, Training and Behavior Aids, Toys, Aquarium Supplies such as Pumps, Filters and Lights 15 Days Returnable This design is exclusively a SATA 6GB/s connected drive, and can be used in any PC or NAS that accepts SATA drives of that spec. With average latency at 8k 70/30, the 16TB IronWolf Pro showed a range of 10.1ms through 447.9ms in iSCSI, while CIFS showed a range of 6.84ms through 179.93 in CIFS, the latter which was again the best-performing configuration. The latest capacity of the Seagate IronWolf Pro line is a solid addition to the company’s Guardian Series. This NAS-specific drive gives users the highest capacity possible at relatively inexpensive price tag, while results from our performance charts reaffirm that the line is a good choice for SOHO, SME markets and creative professionals. Though it has many of the same features as the non-Pro line, the IronWolf Pro offers some expanded specs including its support of up to a 24-bay storage device (compared to 8 bays for the non-Pro version) and 1.2 million hours MTBF (compared to 1 million MTBF for the non-Pro version).

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If you are reading this review and are already bored with the numbers, we apologise in advance. Because this drive is all about the numbers, the good, bad and ugly.

Our Enterprise Synthetic Workload Analysis includes four profiles based on real-world tasks. These profiles have been developed to make it easier to compare to our past benchmarks, as well as widely-published values such as max 4K read and write speed and 8K 70/30, which is commonly used for enterprise drives. Looking at our throughput test which measures 4k random performance, the 16TB IronWolf Pro fell behind in iSCSI performance with 853 IOPS write and 527 IOPS read, as it was out performed by the 14TB model. In CIFS, the 16TB IronWolf Pro posted 683 IOPS write and an impressive 4,774 IOPS read.In standard deviation, the 16TB IronWolf Pro showed reads and writes of 619.791ms and 1335.448ms in iSCSI, respectively, and 53.92ms and 1746.24ms in CIFS.