Seagate ST920813AM, ST940813AM Acoustics, Vibration, Operating vibration, Nonoperating vibration

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2.11.2Vibration

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.

2.11.2.1Operating vibration

The following table lists the maximum vibration levels that the drive may experience while meeting the perfor- mance standards specified in this document.

10–200

Hz

2.0 G (0 to peak)

 

 

 

200–500

Hz

1.0 G (0 to peak)

 

 

 

2.11.2.2Nonoperating vibration

The following table lists the maximum nonoperating vibration that the drive may experience without incurring physical damage or degradation in performance when subsequently put into operation.

5–500 Hz 5.0 Gs (0 to peak). Max displacement may apply below 22 Hz.

2.12Acoustics

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)

Acoustic mode

Idle*

Normal Seek

Performance Seek

 

 

 

2.3 bels (typ)

2.5 bels (typ)

2.8 bels (typ)

2.5 bels (max)

2.7 bels (max)

3.0 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.

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EE25 Series Product Manual, Rev. E

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Contents EE25 Series Page Contents EE25 Series Product Manual, Rev. E List of Figures EE25 Series Product Manual, Rev. E Introduction EE25 Series Product Manual, Rev. E Drive specifications Specification summarySpecifications for 40 and 30 Gbyte models AftermarketVibration, nonoperating Specifications for 20 Gbyte models Drive specification ST920813AM ST920814AMEE25 Series Product Manual, Rev. E Formatted capacity Default logical geometryLBA mode Physical organizationRecording and interface technology Physical characteristicsTechnology Specification Seek timeMsec Typical Max Read seek times vs temperature 85C 25C 20C 30CStart/stop times 85C 25C 20C 30CPower specifications Conducted noise Typical current profileVoltage tolerance Idle mode Power-management modesActive mode Sleep modeEnvironmental specifications AltitudeOperating shock ShockNonoperating shock Vibration Acoustic mode Idle Normal Seek Performance SeekAcoustics Operating vibrationReliability Measurement type SpecificationElectromagnetic immunity Test Description Performance Reference Level StandardAgency certification Corrosive environment Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS Page Jumper settings Configuring and mounting the driveHandling and static discharge precautions Master/slave configurationDrive mounting Cable-select optionCable Connector Signal Name Conductor Contact ATA interface signals and connector pinsSignal Name Connector Cable Contact Conductor ATA interfaceSupported ATA commands Command name Command code in hex ATA-standard commandsATA-standard power-management commands Command name Command code in hexATA-standard security commands Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command 0CHEE25 Series Product Manual, Rev. E Presales Support Seagate Technology support servicesInternet Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index NumericsPage Page EE25 Series Product Manual, Rev. E Page Seagate Technology LLC
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