HGST Ultrastar 7K2 User Manual

Ultrastar 7K2
HGST Hard Disk Drive
Technical Reference Manual
8
 Reliability Features Set-Data Lifeguard™ — Representing the ongoing commitment to data
protection, Data Lifeguard includes features that enhance the drive’s ability to prevent data loss.
Data Lifeguard data protection utilities include thermal management, an environmental protection
system, and embedded error detection and repair features that automatically detect, isolate, and
repair problem areas that may develop over the extended use of the hard drive. With these enhanced
data reliability features, the drive can perform more accurate monitoring, error repair, and deliver
exceptional data security.
 Power Loss Data Protection — Upon power loss, the drive utilizes stored spindle energy to back
up the HDD cache to on- board flash. This allows deeper write queues which boosts performance,
while minimizing data loss/corruption such as write splices that can occur during unexpected
power losses.
 Hot Plug Support — SATA supports hot plugging (also known as “hot swapping”), the ability to
swap out a failed hard drive without having to power down the system or reboot. This capability
contributes to both data availability and serviceability without any associated downtime, making it a
critical feature for extending SATA into enterprise applications.
 Active LED Status — The drive supports external LED requirements. It provides an activity LED
output which is ON during command execution and OFF otherwise.
 Fluid Dynamic Bearings (FDB) — Bearing design that incorporates a layer of high-viscosity
lubricant instead of ball bearings in the hard drive spindle motor. As an alternative to conventional ball
bearing technology, FDB designs provide increased non-operational shock resistance, speed control,
and improved acoustics.
 Staggered Spin-Up — Next generation SATA 6 Gb/s feature that allows the system to control
whether the drive will spin up immediately or wait until the interface is fully ready.
 CacheFlow™ —This unique, multi-generation caching algorithm evaluates the way data is read from
and written to the drive and adapts “on-the-fly” to the optimum read and write caching methods.
CacheFlow minimizes disk seek operations and overheads due to rotational latency. CacheFlow
supports sequential and random write cache. With write cache and other CacheFlow features, the user
can cache both read and write data. The cache can hold multiple writes and collectively write them to
the hard disk.
 48-bit Logical Block Addressing (LBA) — HGST SATA drives support both 48-bit and 28-bit LBA
and CHS-based addressing. LBA is included in advanced BIOS and operating system device drivers
and ensures high capacity disk integration.
 Power Management — The drive supports the ATA and SATA power management command set,
allowing the host to reduce the power consumption of the drive by issuing a variety of power
management commands.
 Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T.) — S.M.A.R.T. enables a
drive’s internal status to be monitored through diagnostic commands at the host level and during
offline activities. S.M.A.R.T. devices employ data analysis algorithms that are used to predict the
likelihood of some near-term degradation or fault conditions. When used with a S.M.A.R.T.
application, the drive can alert the host system of a negative reliability status condition. The host
system can then warn the user of the impending risk of data loss and recommend an appropriate
action.
 ATA S e c u r i t y — The drive supports the ATA Security Mode Feature set. The ATA Security Mode
feature set allows the user to create a device lock password that prevents unauthorized hard disk
access even if the drive is removed from the host computer. The correct password must be supplied to
the hard drive in order to access user data. Both the User and Master Password features are supported,
along with the High and Maximum security modes. The Master Password Revision code is also
supported. This feature varies by drive configuration and may not be available on all configurations.
 Data Path Protection (DPP) — A feature that prevents possible electronic failures from corrupting
data on the hard drive.

HGST Ultrastar 7K2 Specifications

General

Brand	HGST
Model	Ultrastar 7K2
Category	Storage
Language	English