SEAGATE SkyHawk AL 18TB 3.5" 7200RPM 256MB CAHCE 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

Specifiactions

Drive specification

Formatted (512 bytes/sector)
18TB

Heads
18

Discs
9

Bytes per logical sector
512

Bytes per physical sector
4096

Recording density, KBPI (Kb/in max)
2321

Track density, KTPI (ktracks/in avg.)
480

Areal density, (Gb/in2 avg)
1155

Spindle speed (RPM)
7200

Internal data transfer rate (Mb/s max)
2833

Sustained data transfer rate OD (MB/s max)
260

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)
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)