Seagate SkyHawk Surveillance AI ST20000VE004 20TB 3.5" 512MB Cache SATA III Internal Hard Drive

Key Features 512 MB data buffer. Full-track multiple-sector transfer capability without local processor intervention. High instantaneous (burst) data-transfer rates (up to 600MB per second). Native Command Queuing with command ordering to increase performance in demanding applications. PowerChoice for selectable power savings Perpendicular recording technology provides the drives with increased areal density. SeaTools diagnostic software performs a drive self-test that eliminates unnecessary drive returns. State-of-the-art cache and on-the-fly error-correction algorithms. Support for S.M.A.R.T. drive monitoring and reporting. Supports latching SATA cables and connectors. Top Cover Attached motor for excellent vibration tolerance Worldwide Name (WWN) capability uniquely identifies the drive Specifiactions Drive specification Formatted (512 bytes/sector) 20TB Heads 20 Discs 10 Bytes per logical sector 512 Bytes per physical sector 4096 Recording density, KBPI (Kb/in max) 2426 Track density, KTPI (ktracks/in avg.) 436 Areal density, (Gb/in2 avg) 1028 Spindle speed (RPM) 7200 Internal data transfer rate (Mb/s max) 2833 Sustained data transfer rate OD (MB/s max) 250 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 512MB Weight: (maximum) 670g (1.477 lb) Average latency 4.16ms Power-on to ready (sec) (typ/max) 23/30 Standby to ready (sec) (typ/max) 23/30 Startup current (typical) 12V (peak) 2.0A Voltage tolerance (including noise) 5V ± 5% 12V ± 10% Operating ambient temperature (min °C) * 0°C (Ambient) Operating temperature (max °C) * 65°C (Drive Reported Temperature)