Seagate ST2000VX002 Conducted noise, Power-management modes, Active mode, Idle mode, Sleep mode

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2.8.2Conducted noise

Input noise ripple is measured at the host system power supply across an equivalent 80-ohm resistive load on the +12 volt line or an equivalent 15-ohm resistive load on the +5 volt line.

•Using 12-volt power, the drive is expected to operate with a maximum of 120 mV peak-to-peak square-wave injected noise at up to 10MHz.

•Using 5-volt power, the drive is expected to operate with a maximum of 100 mV peak-to-peak square-wave injected noise at up to 10MHz.

Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write current.

2.8.3Power-management modes

The drive provides programmable power management to provide greater energy efficiency. In most systems, you can control power management through the system setup program. The drive features the following power-man- agement modes:

Power modes

Heads

Spindle

Buffer

 

 

 

 

Active

Tracking

Rotating

Enabled

 

 

 

 

Idle

Tracking

Rotating

Enable

 

 

 

 

Standby

Parked

Stopped

Enabled

 

 

 

 

Sleep

Parked

Stopped

Disabled

 

 

 

 

•Active mode

The drive is in Active mode during the read/write and seek operations.

• Idle mode

The buffer remains enabled, and the drive accepts all commands and returns to Active mode any time disc access is necessary.

•Standby mode

The drive enters Standby mode when the host sends a Standby Immediate command. If the host has set the standby timer, the drive can also enter Standby mode automatically after the drive has been inactive for a spec- ifiable length of time. The standby timer delay is established using a Standby or Idle command. In Standby mode, the drive buffer is enabled, the heads are parked and the spindle is at rest. The drive accepts all com- mands and returns to Active mode any time disc access is necessary.

• Sleep mode

The drive enters Sleep mode after receiving a Sleep command from the host. In Sleep mode, the drive buffer is disabled, the heads are parked and the spindle is at rest. The drive leaves Sleep mode after it receives a Hard Reset or Soft Reset from the host. After receiving a reset, the drive exits Sleep mode and enters Standby mode with all current translation parameters intact.

• Idle and Standby timers

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and begins counting down from its specified delay times to zero. If the standby timer reaches zero before any drive activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive accepts all commands and returns to Active mode when disc access is necessary.

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SV35 Series SATA Product Manual, Rev. D

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Contents SV35 Series Revision history Revision Date Sheets affected or commentsContents SV35 Series Sata Product Manual, Rev. D List of Figures Page Seagate Technology Support Services SV35 Series Sata Product Manual, Rev. D Introduction About the Serial ATA interface Drive specifications summary for the 2TB model Drive specificationsSpecification summary tables Access the following web Drive specifications summary for the 1TB models Drive specification ST31000526SV ST31000525SVDrive specifications summary for 500GB and 250GB models Drive specification ST3500411SV ST3500410SV ST3250311SVDrive specifications summary for 500GB and 250GB models Default logical geometry LBA modeFormatted capacity Recording and interface technologyStart/stop times Physical characteristicsSeek time Power specifications Typical Current Profiles Power-management modes Active modeIdle mode Sleep modeEnvironmental specifications Nonoperating shock Disk models VibrationOperating vibration Disk modelAcoustics emissions Agency certification WarrantyElectromagnetic immunity Australian C-Tick N176 FCC verificationChina Restriction of Hazardous Substances RoHS Directive Environmental protectionCorrosive environment Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsDrive mounting Attaching Sata cablingMounting dimensions 2TB and 1TB Mounting dimensions 500GB and 250GB Serial ATA Sata interface Hot-Plug compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Segment Pin Function DefinitionCommand name Command code in hex Supported ATA commandsSupported ATA commands F3H Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSV35 Series Sata Product Manual, Rev. D Set Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsM.A.R.T. commands Index RRL Page SV35 Series Sata Product Manual, Rev. D Page Seagate Technology LLC
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ST3500411SV, ST31000526SV, ST2000VX002, ST31000525SV specifications

Seagate, a stalwart name in the data storage industry, offers a range of hard disk drives that cater to various needs and applications. Three notable models are the ST3250311SV, ST3500410SV, and ST31000525SV, each designed with unique characteristics and features suitable for diverse environments, from personal computing to enterprise storage solutions.

The ST3250311SV is a 250GB SATA drive that operates at 7200 RPM, providing a solid balance of performance and capacity. One of its main features is its 8MB cache, which enhances read and write speeds, making it suitable for high-demand applications like gaming and multimedia. The drive is also designed with Seagate's advanced data protection technologies, including an intelligent error recovery system that serves to minimize data loss and increase reliability during operation.

Next in line, the ST3500410SV offers a larger capacity of 500GB, making it an excellent choice for users who require more storage. Like its counterpart, it operates at 7200 RPM but is equipped with a 16MB cache for even better performance. The drive is built on Seagate's perpendicular recording technology, which increases storage density and improves data integrity. The ST3500410SV is particularly well-suited for server environments, where reliability and speed are critical. Its advanced power management features help reduce energy consumption, making it a more eco-friendly option for data centers.

Finally, the ST31000525SV provides an impressive 1TB of storage capacity, leveraging the same 7200 RPM speed and 32MB cache as its predecessors. This model exemplifies Seagate's focus on enhancing user experiences with greater storage and quicker access times, fulfilling the demands of both consumer and enterprise markets. With features like S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology), this drive helps users keep tabs on their drive's health and performance, anticipating potential failures and ensuring data security.

In summary, the Seagate ST3250311SV, ST3500410SV, and ST31000525SV drives showcase a range of capacities and features aimed at meeting the needs of today’s data-driven world. From gaming and personal use to demanding enterprise applications, these hard drives combine speed, reliability, and advanced technologies to deliver outstanding performance and data protection. Their robust design and efficient power management reinforce Seagate's commitment to innovation and sustainability in data storage solutions.
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