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2.7
Acoustics
Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements 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.
For seek mode tests, the drive is placed in seek mode only.
The number of seeks per second is defined by the following equation:
Note
Number of seeks per second = 0.4 / (average latency + average access time)
)
Table 3 Fluid Dynamic Bearing (FDB) motor acoustics
Idle*
2.8 bels (typ)
3.0 bels (max)
Performance seek
3.2 bels (typ)
3.4 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 .
2.8
Test for Prominent Discrete Tones (PDTs)
Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use of the absolute threshold of hearing. Seagate uses this threshold curve (originated in ISO 389-7) to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards.
2.9
Electromagnetic immunity
When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table:
Table 4 Radio frequency environments
Test Description
Electrostatic discharge
Radiated RF immunity
Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV
80 to 1000 MHz, 3 V/m,
80% AM with 1 kHz sine
900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz
± 1 kV on AC mains, ± 0.5 kV on external I/O Electrical fast transient
Surge immunity ± 1 kV differential, ± 2 kV common, AC mains
Conducted RF immunity 150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz sine
Voltage dips, interrupts
0% open, 5 seconds
0% short, 5 seconds
40%, 0.10 seconds
70%, 0.01 seconds
Performance level
B
A
B
B
A
C
C
C
B
Reference standard
EN 61000-4-2: 95
EN 61000-4-3: 96
ENV 50204: 95
EN 61000-4-4: 95
EN 61000-4-5: 95
EN 61000-4-6: 97
EN 61000-4-11: 94
Seagate IronWolf Serial ATA Product Manual, Rev. B 15
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Key Features
- 10 TB 3.5" 7200 RPM Serial ATA III
- NAS HDD
- Storage drive buffer size: 256 MB
- 6 Gbit/s
- 705 g
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Table of contents
- 5 Seagate® Technology Support Services
- 6 Introduction
- 6 About the Serial ATA interface
- 7 Drive specifications
- 7 Specification summary tables
- 9 Formatted capacity
- 9 LBA mode
- 9 Recording and interface technology
- 9 Start/stop times
- 10 Power specifications
- 10 Power consumption
- 11 Conducted noise
- 11 Voltage tolerance
- 12 Extended Power Conditions - PowerChoiceTM
- 14 Environmental limits
- 14 Temperature
- 14 Humidity
- 14 Effective Altitude (sea level)
- 15 Shock
- 15 Vibration
- 16 Acoustics
- 16 Test for Prominent Discrete Tones (PDTs)
- 16 Electromagnetic immunity
- 17 Reliability
- 17 Annualized Failure Rate (AFR) and Mean Time Between Failures (MTBF)
- 17 Storage
- 17 Warranty
- 17 Agency certification
- 17 Safety certification
- 18 Electromagnetic compatibility
- 18 FCC verification
- 19 Environmental protection
- 19 European Union Restriction of Hazardous Substances (RoHS) Directive
- 19 China Requirements — China RoHS
- 20 Corrosive environment
- 20 Shipping, Repair and Returns
- 21 Configuring and mounting the drive
- 21 Handling and static-discharge precautions
- 21 Configuring the drive
- 21 Serial ATA cables and connectors
- 22 Drive mounting
- 22 Mechanical specifications
- 23 Serial ATA (SATA) interface
- 23 Hot-Plug compatibility
- 23 Serial ATA device plug connector pin definitions
- 24 Supported ATA commands
- 26 Identify Device command
- 29 Set Features command
- 30 S.M.A.R.T. commands