Recently, Seagate has quietly expanded
the Exos series product line using multi-actuator (Mach.2) technology and launched the Exos 2X18 series hard disk. These include 16TB and 18TB models, which have larger capacities than the 14TB of the previous generation. In addition to the general SATA 6 Gbps interface, there are also SAS 12 Gbps interface products.
These new hard drives not only have greater capacity, but also higher performance, using the second generation of Mach.2 technology. According to Seagate, the maximum sustained transfer rate of the Exos 2X18 SATA version is 554 MBps, while the SAS version is 545 MBps, which is currently the fastest mechanical hard drive in the world. Additionally, these drives had an average latency of 4.16ms and random read/write IOPS (4K QD16) of 304/560.
Seagate Exos 2X18 series hard drives still use traditional magnetic recording technology (CMR), with a speed of 7200 RPM, with 256MB cache, and fully support Seagate data center technology, including PowerChoice (to manage idle power consumption), PowerBalance (to manage active power consumption), and hot-plug support.
Seagate plans to use Mach.2 technology more widely, which will double the performance of hard drives. Since the end of 2017, Seagate has been cooperating with Microsoft for experiments, and it is likely to gradually become the standard configuration of the product line in the future. The power consumption of Exos 2X18 series hard drives is 7.8W/8W (SATA/SAS version) when idle, and 13.5W/12.8W (SATA/SAS version) under heavy load.
As it is a data center-oriented product, the Exos 2X18 series hard drives support a 7×24 use environment, and Seagate also provides a five-year repair report. Seagate also did not disclose specific prices, because pricing is largely dependent on quantity and actual configuration.