Seagate ST3200826SCE Conducted noise, Voltage tolerance, Power-management modes, Active 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 10 MHz.

•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 10 MHz.

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

2.8.3Voltage tolerance

Voltage tolerance (including noise):

5V ± 5%

12V ± 10%

2.8.4Power-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-management modes:

Power modes

Heads

Spindle

Buffer

 

 

 

 

Active

Tracking

Rotating

Enabled

 

 

 

 

Idle

Tracking

Rotating

Enabled

 

 

 

 

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 specifiable 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 commands 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

DB35 Serial ATA Product Manual, Rev. E

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Contents ST3400832SCE ST3300831SCE ST3250823SCE ST3200826SCE DB35 Serial ATAPage Contents DB35 Serial ATA Product Manual, Rev. E List of Figures Page DB35 Serial ATA IntroductionAbout the Serial ATA interface Specification summary table Drive specifications30% per hour max Cylinders Read/write heads Sectors per track 16,383 Default logical geometryLBA mode Formatted capacityTypical seek times msec Read Write Physical characteristicsRecording and interface technology Seek timeStart/stop times Power specificationsTypical current profiles DC power requirementsSleep mode Power-management modesActive mode Idle modeEnvironmental specifications Acoustics Performance Reference Test Description Level Standard Electromagnetic immunityReliability Radio frequency environmentsKorean RRL Safety certificationAgency certification Electromagnetic compatibilityEuropean Union Restriction of Hazardous Substances RoHS Environmental protectionAustralian C-Tick N176 FCC verificationCorrosive environment DB35 Serial ATA Product Manual, Rev. E Handling and static-discharge precautions Configuring and mounting the driveConfiguring the drive Breather filter hole precautionsAttaching Sata cabling Serial ATA cables and connectorsDrive mounting Mounting dimensions-top, side and end viewHot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalSupported ATA commands Supported ATA commandsCommand name Command code in hex F4H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordSet Features command values Set Features command3 S.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command DB35 Serial ATA Product Manual, Rev. E Technical Support Seagate Technology support servicesInternet Presales SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index ITE RPM RRL Page Page Seagate Technology LLC

ST3250823SCE, ST3400832SCE, ST3300831SCE, ST3200826SCE specifications

The Seagate ST3250823SCE, ST3300831SCE, ST3200826SCE, and ST3400832SCE are notable hard disk drives that exemplify Seagate's commitment to providing reliable storage solutions for both consumer and enterprise applications. These drives leverage advanced technologies and offer various characteristics that cater to different storage needs.

The ST3250823SCE is a 250GB SATA hard disk drive designed for entry-level servers and desktop applications. It features a 7200 RPM spindle speed, ensuring swift data access and enhanced overall system performance. The drive's 8MB cache improves read and write speeds, allowing for more efficient data handling. Designed with durability in mind, the ST3250823SCE incorporates features like error correction codes and advanced power management, ensuring reliable operation over time.

Moving on to the ST3300831SCE, this drive offers a capacity of 300GB and is tailored for slightly more demanding applications. Like its predecessor, it boasts a 7200 RPM rotational speed, which helps maintain optimal performance for everyday computing tasks. The ST3300831SCE is also equipped with a SATA interface, making it compatible with a wide range of systems. Notably, its improved read/write speeds assist in reducing system bottlenecks, making it a suitable option for users who require extra storage without compromising speed.

The ST3200826SCE stands as a solid 200GB choice, particularly focusing on budget-conscious consumers. This model retains similar features to other drives in this series, including the 7200 RPM speed and SATA connection. Its reliability is enhanced through built-in technologies aimed at reducing data loss, thereby offering peace of mind for users who store critical information. The ST3200826SCE serves well for standard desktop usage and is a reliable option for archived data storage.

Finally, the ST3400832SCE, with its generous 400GB capacity, is positioned as a robust solution for users needing more substantial storage. Like its siblings, it operates at 7200 RPM, promoting fast data transfers. This model is particularly suitable for multimedia applications, such as video editing or gaming, where higher storage capacity coupled with quick access times is essential. The drive's design also incorporates features that support thermal management, ensuring optimal performance under load.

In summary, the Seagate ST3250823SCE, ST3300831SCE, ST3200826SCE, and ST3400832SCE collectively represent a diverse range of storage solutions that emphasize speed, reliability, and efficiency. Each model caters to different storage requirements, ensuring that users can find an appropriate solution tailored to their needs. These drives are characterized by their 7200 RPM speeds, SATA interfaces, and advanced technologies aimed at safeguarding data, making them a solid choice for both everyday users and professionals.
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