Seagate ST3500641NS manual Acoustics, Vibration, Operating vibration, Nonoperating vibration

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2.8.6Vibration

All vibration specifications assume that the drive is mounted securely with the input vibration applied at the drive mounting screws. Vibration may be applied in the X, Y or Z axis.

2.8.6.1Operating vibration

The maximum vibration levels that the drive may experience while meeting the performance standards speci- fied in this document are specified below.

5–22 Hz

0.25

Gs (Limited displacement)

 

 

 

23–350 Hz

0.50

Gs

 

 

 

351–500 Hz

0.25

Gs

 

 

 

2.8.6.2Nonoperating vibration

The maximum nonoperating vibration levels that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation are specified below.

5–22 Hz

0.25 Gs (Limited displacement)

 

 

23–350 Hz

5.0 Gs

 

 

351–500 Hz

1.0 Gs

 

 

2.9Acoustics

Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All mea- surements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward.

Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation:

(Number of seeks per second = 0.4 / (average latency + average access time)

Table 2: Fluid Dynamic Bearing (FDB) motor acoustics

Idle*

Quiet seek

 

 

2.8 bels (typ)

2.9 bels (typ)

2.86 bels (max)

2.93 bels (max)

 

 

*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 specificationsTypical current profile Conducted noiseVoltage tolerance 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 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 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 SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial 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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