Seagate (ST8000VN004) - Инструкция по эксплуатации - Страница 6

Seagate IronWolf SATA Product Manual, Rev. B

  5

1.0

Introduction

This manual describes the functional, mechanical and interface specifications for the following:

Seagate® IronWolf® Serial ATA model drives:.

These drives provide the following key features:
• 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.
• Perpendicular recording technology provides the drives with increased areal density.
• PowerChoice™ for selectable power savings
• 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.
• Tarnish-resistant components to help protect drive from environmental elements, increasing field reliability.
• Worldwide Name ( WWN) capability uniquely identifies the drive.

1.1

About the Serial ATA interface

The Serial ATA interface provides several advantages over the traditional (parallel) ATA interface. The primary advantages include:
• Easy installation and configuration with true plug-and-play connectivity.

It is not necessary to set any jumpers or other configuration options.

• Thinner and more flexible cabling for improved enclosure airflow and ease of installation.
• Scalability to higher performance levels.

In addition, Serial ATA makes the transition from parallel ATA easy by providing legacy software support. Serial ATA was designed to

allow users to install a Serial ATA host adapter and Serial ATA disk drive in the current system and expect all of the existing

applications to work as normal.

The Serial ATA inter face connects each disk drive in a point-to-point configuration with the Serial ATA host adapter. There is no

master/slave relationship with Serial ATA devices like there is with parallel ATA. If two drives are attached on one Serial ATA host 
adapter, the host operating system views the two devices as if they were both “masters” on two separate por ts. This essentially

means both drives behave as if they are Device 0 (master) devices.

The  S e rial ATA host adapter an d drive  sh are  the fun c tion  of emulating parallel ATA device behavior to provide back ward

compatibility with existing host systems and software. The Command and Control Block registers, PIO and DMA data transfers, resets, 
and interrupts are all emulated.

The Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the

Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For additional information about how Serial ATA emulates 
parallel ATA, refer to the “Serial ATA: High Speed Serialized AT Attachment” specification. The specification can be downloaded from

www.serialata.org

.

5xxE models

Standard

ST8000VN004

Note

Seagate recommends validating the configuration with the selected HBA/
RAID controller manufacturer to ensure use of full capacity is supported.

Note

The host adapter may, optionally, emulate a master/slave environment to host software where two

devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and

Device 1 (slave) accessed at the same set of host bus addresses. A host adapter that emulates a master/
slave environment manages two sets of shadow registers. This is not a typical Serial ATA environment.