EXOS

Comprehensive architectural analysis, mechanical engineering breakdown, and empirical ZFS telemetry for the 3x Seagate Exos X22 22 TB enterprise SATA hard disk drives (ST22000NM001E-3H). Features an industry-first 10-platter, 20-head helium-sealed hermetic platform, Conventional Magnetic Recording (CMR), 512 MB multi-segmented DDR4 cache, 285 MB/s sustained throughput, and 2.5M hours MTBF. Documenting live production across serials ZX257FAA, ZX25CYYH, and ZX25FA0P in the QNAP TS-873A 59.9 TB ZFS RAIDZ1 pool.

QNAP TS-873A | AMD Ryzen™ quad-core 2.2 GHz 2.5GbE NAS AMD Ryzen™ quad-core 2.2 GHz 2.5GbE NAS supports M.2 NVMe SSD and PCIe expansion for adding 10GbE high-speed connectivity and M.2 SSD; QTS and QuTS hero dual operating system for greater flexibility Hardware CPU: AMD Ryzen™ Embedded V1500B Quad 4-core/8-thread 2.2 GHz processor CPU Architecture: 64-bit x86 Graphic Processors: Optional via a PCIe adapter Floating Point Unit: Yes Encryption Engine: Yes: AES-NI Hardware-accelerated Transcoding: Optional via a PCIe adapter System…