HGST Ultrastar 7K2 User Manual

Ultrastar 7K2
HGST Hard Disk Drive
Technical Reference Manual
7
D ESCRIPTION AND F EATURES
General Description
HGST Ultrastar Capacity Enterprise hard drives offer up to 10 TB capacities and are available with SATA
interface. With the highest error tolerance and MTBF of any capacity-optimized drive, HGST Ultrastar
delivers the durability and reliability required in tightly packed vibration prone multi-drive systems. The
combination of high-capacity, peak performance and robust design make HGST Ultrastar drives ideal for
heavy workload environments, cloud storage, RAID arrays, external storage arrays, data warehousing,
and mining applications.
Product Features
 Serial ATA (SATA) — Serial ATA (SATA) is the next generation bus interface for hard drives. It is
designed to replace Parallel ATA, and has many advantages including increased transfer rate,
improved signal integrity, enhanced data protection, and hot plug support.
 Time-Limited Error Recovery (TLER) — TLER prevents hard drive error recovery fallout by
limiting the time the drive spends in error recovery, providing increased performance, improved
availability, and lower total cost of ownership in RAID arrays.
 Rotary Acceleration Feed Forward (RAFF) — These drives employ RAFF technology to maintain
hard drive performance in high vibration environments through adaptive compensation of the servo
system.
 Perpendicular Magnetic Recording (PMR) — With PMR technology the magnetization of each
data bit is aligned vertically to the spinning disk, rather than longitudinally as has been the case in
hard drive technology for decades. This enables more data on a given disk than is possible with
conventional longitudinal recording, and provides a platform for future expansion of hard drive
densities.
 IntelliSeek™ — Key product feature that calculates optimum seek speeds to lower power
consumption, noise, and vibration.
 Native Command Queuing (NCQ) — Performance of a random I/O workload can be improved
through intelligent re-ordering of the I/O requests so they read/write to and from the nearest available
sectors and minimize the need for additional disk revolutions or head actuator movement. This
improvement can be achieved though Native Command Queing (NCQ) , which is supported by these
hard drives.
 Pre-emptive Wear Leveling (PWL) — This feature provides a solution for protecting the recording
media against mechanical wear. In cases where the drive is so busy with incoming commands that it
is forced to stay in a same cylinder position for a long time, the PWL control engine initiates forced
seeks so that disk lubricant maintains an even distribution and does not become depleted. This feature
ensures reliability for applications that perform a high incidence of read/write operations at the same
physical location on the disk.
 MicroFemto Slider — These drives incorporate the next generation of femto slider form factor in
which the read/write head is mounted on the small, lightweight microfemto slider that allows the head
to move more quickly from track to track on the disk.
 S.M.A.R.T. Command Transport (SCT) — The SCT Command Transport feature set provides a
method for a host to send commands and data to a device and for a device to send data and status to a
host using log pages.
 World Wide Name (WWN) — The World Wide Name (WWN) defined in ATA/ATAPI-7 is a
modification of the IEEE extended unique identifier 64 bit standard (EUI-64) and is comprised of three
major components: naming authority, organizationally unique identifier (OUI) and serial number.
This product’s OUI is 0014EEh.

HGST Ultrastar 7K2 Specifications

General

Brand	HGST
Model	Ultrastar 7K2
Category	Storage
Language	English