Seagate Exos X20 20 TB Обзор и тестирование жесткого диска большой емкости для NAS и рейд хранилищ

Обзор и тестирование жесткого диска Сигейт 20ТБ ST20000NM007D Seagate Exos Enterprise x20 Спецификация: Formatted (512 bytes/sector)* - 20TB Heads - 20 Disks - 10 Bytes per logical sector - 512 Bytes per physical sector - 4096 Recording density, KBPI (Kb/in max) - 2470 Track density, KTPI (ktracks/in avg.) - 482 Areal density, (Gb/in2 avg) - 1146 Spindle speed (RPM) - 7200 Internal data transfer rate (Mb/s max) - 2899 Sustained data transfer rate OD (MiB/s max) - 272 (285 MB/s max) I/O data-transfer rate (MB/s max) - 600 ATA data-transfer modes supported - PIO modes 0–4 Multiword DMA modes 0–2 Ultra DMA modes 0–6 Cache buffer - 256MB (262,144KB) Weight: (maximum) - 680g (1.499 lb) Average latency - 4.16ms Power-on to ready (sec) (typ/max) - 25/30 Standby to ready (sec) (typ/max) - 25/30 Startup current (typical) 12V (peak )- 2.6A 2.0A (optional configuration through Smart Command Transport) - Voltage tolerance (including noise) - 5V ± 5% , 12V ± 10% Operating temperature† 5° to 60°C (Drive Reported Temperature) Non-Operating temperature –40° to 70°C (Ambient Temperature, see sections 2.6.1 and 2.14)