Seagate ST3500641NS, ST3500841NS manual Start/stop times, Power specifications

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2.6Start/stop times

Power-on to Ready (sec)

10 (max)

 

 

Standby to Ready (sec)

10 (max)

 

 

Ready to spindle stop (sec)

12 (max)

 

 

2.7Power specifications

The drive receives DC power (+5V or +12V) through a native SATA power connector. See Figure 3 on page 16.

2.7.1Power consumption

Power requirements for the drives are listed in the table on page 9. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature.

• Spinup power

Spinup power is measured from power-on to the time that the drive spindle reaches operating speed.

• Seek mode

During seek mode, the read/write actuator arm moves toward a specific position on the disc surface and does not execute a read or write operation. Servo electronics are active. Seek mode power represents the worst-case power consumption, using only random seeks with read or write latency time. This mode is not typical and is provided for worst-case information.

• Read/write power and current

Read/write power is measured with the heads on track, based on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-msec delay.

• Operating power and current

Operating power is measured using 40 percent random seeks, 40 percent read/write mode (1 write for each 10 reads) and 20 percent drive idle mode.

• Idle mode power

Idle mode power is measured with the drive up to speed, with servo electronics active and with the heads in a random track location.

• Standby mode

During Standby mode, the drive accepts commands, but the drive is not spinning, and the servo and read/ write electronics are in power-down mode.

Table 1:

DC power requirements

 

 

 

Power dissipation

Average (25° C)

 

 

 

Spinup

 

2.9 Amps

 

 

 

Idle*

 

10.40 watts

 

 

Operating (40% r/w, 40% seek, 20% inop.)

13.00 watts

 

 

Seeking (random, 20% idle)

12.60 watts

 

 

 

Standby

 

0.80 watts

 

 

 

Sleep

 

0.80 watts

 

 

 

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

NL35 Series 7200.2 SATA Product Manual, Rev. C

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Contents ST3500841NS ST3500641NS NL35 Series 7200.2 Serial ATAPage Contents NL35 Series 7200.2 Sata Product Manual, Rev. C List of Figures Page NL35 Series 7200.2 Serial ATA IntroductionAbout the Serial ATA interface Formatted capacity Drive specificationsDefault logical geometry LBA modeTypical seek times msec Read Write Physical characteristicsRecording and interface technology Seek timeStart/stop times Power specificationsVoltage tolerance Typical current profileConducted noise Sleep mode Power-management modesActive mode Idle modeEnvironmental specifications Nonoperating vibration AcousticsVibration Operating vibrationTest Description Performance level Reference standard Electromagnetic immunityReliability Radio frequency environmentsAgency certification Environmental protection Corrosive environment NL35 Series 7200.2 Sata Product Manual, Rev. C Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewNL35 Series 7200.2 Sata Product Manual, Rev. C Hot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalCommand name Command code in hex Supported ATA commandsSupported ATA commands F4H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordSet Features command values Set Features commandCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands 3.1 S.M.A.R.T. Command Transport SCTNL35 Series 7200.2 Sata Product Manual, Rev. C Technical Support Seagate Technology support servicesInternet Presales SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index RRL Sata NL35 Series 7200.2 Sata Product Manual, Rev. C Page Seagate Technology LLC
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ST3500641NS, ST3500841NS specifications

The Seagate ST3500841NS and ST3500641NS are robust hard drives specifically designed for enterprise environments, catering to the demanding needs of data centers, server farms, and storage solutions. These drives are part of Seagate's enterprise series and reflect a commitment to reliability, performance, and capacity.

One of the main features of the ST3500841NS and ST3500641NS is their impressive storage capacity. The ST3500841NS offers 500GB of storage, while the ST3500641NS provides a slightly lower capacity at 640GB. Both drives utilize a standard 3.5-inch form factor, making them suitable for a variety of server and storage configurations. They operate at a high spindle speed of 7200 RPM, which contributes to faster data access and overall improved performance compared to traditional 5400 RPM drives.

These drives are designed to sustain high workloads and feature a mean time between failures (MTBF) rating that ensures reliability over extended periods of operation. With their enhanced error correction capabilities, data integrity is maintained even under heavy loads, making these drives ideal for use in critical applications where data loss is not an option.

The integration of technologies such as Native Command Queuing (NCQ) enhances the performance of these drives in multi-user environments. NCQ allows the drive to optimize the order of read and write commands, reducing latency and improving overall throughput. Furthermore, the ST3500841NS and ST3500641NS both feature an SATA interface, supporting speeds of up to 3.0 Gb/s, which is the standard for modern storage solutions.

Another noteworthy characteristic of these drives is their energy efficiency. Despite their robust performance, the ST3500841NS and ST3500641NS are designed to consume less power, thereby reducing operational costs and contributing to a more sustainable data center environment.

In summary, the Seagate ST3500841NS and ST3500641NS are purpose-built for enterprise applications, offering a blend of capacity, performance, and reliability. Their advanced technologies, coupled with impressive MTBF ratings and energy efficiency, make them suitable for critical applications in various high-demand environments. Whether utilized in small server systems or large-scale data centers, these drives provide the robust performance that businesses require in today’s data-driven landscape.
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