Seagate SkyHawk AI 20TB 3.5″ 7200RPM 256MB SATA III Internal Hard Drive

Key Features
256 MB data buffer.
7200 RPM spindle speed.
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

Specifications

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)
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 (MB/s max)
248

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) 2.0A

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)