Acoustics, Acoustic mode | Seagate ST340015A guide

16	Barracuda 5400.1 Product Manual, Rev. G

2.11Acoustics

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.

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 1: Fluid Dynamic Bearing (FDB) motor acoustics

		Acoustic mode

Model	Idle*	Quiet seek	Performance seek


ST340015A	2.6 bels (typ)	2.7 bels (typ)	2.8 bels (typ)
	2.8 bels (max)	2.9 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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Seagate ST340015A manual Acoustics, Acoustic mode, Fluid Dynamic Bearing FDB motor acoustics

Contents

Page Page Page Page Contents Seagate Technology support services Barracuda 5400.1 Product Manual, Rev. G List of Figures Barracuda 5400.1 Product Manual, Rev. G Introduction Barracuda 5400.1 Product Manual, Rev. G Drive specifications Specification summary table Drive specification ST340015A 50,000 Humidity SeaShield Default logical geometry LBA modePhysical organization Physical characteristics ATA Power specifications Seek timeStart/stop times Typical seek times msec Read Write Barracuda 5400.1 Product Manual, Rev. G Power consumption Spinup powerSeek mode Read/write power and current Barracuda 5400.1 Product Manual, Rev. G Typical 5V startup and operation current profile Power-management modes Active modeIdle mode Conducted noise Sleep mode Idle and Standby timersEnvironmental specifications Ambient temperature Temperature gradient Wet bulb temperatureHumidity Relative humidity Altitude Barracuda 5400.1 Product Manual, Rev. G Shock Operating shockNonoperating shock Vibration Acoustic mode AcousticsFluid Dynamic Bearing FDB motor acoustics Model Idle Quiet seek Performance seek Reliability Performance Reference Test Description Level Standard Agency certification Safety certification Electromagnetic compatibilityKorean RRL FCC verification Barracuda 5400.1 Product Manual, Rev. G Configuring and mounting the drive Handling and static discharge precautions Breather filter hole precautions Breather filter hole location Drive as master with a non-ATA-compatible slave Cable select option Ultra ATA/100 cable Drive mountingMaster Slave Mounting dimensions-top, side and end view Barracuda 5400.1 Product Manual, Rev. G ATA interface signals and connector pins ATA interface O pins and supported ATA signals Command name Command code in hex ATA-standard commands EC H Command name Command code in hex Identify Device command ATA-standard security commands Word Description Value 0C5AH XxxxH Xx3FH Description if bit is set to Bit Set Features command 0CH F1H Report full capacity available 4 S.M.A.R.T. commands Code in features Register A.R.T. command Seagate Technology support services Online Services Internet MySeagate Automated Phone Services Presales, Technical Support and Customer Service40Barracuda 5400.1 Product Manual, Rev. G USA/Canada/Latin America Support Services Call Center Toll-free Direct dialAmericas Americas Seagate † European Support Services Africa/Middle East Support ServicesCall Center Asia/Pacific Support Services Barracuda 5400.1 Product Manual, Rev. G Index GMR Barracuda 5400.1 Product Manual, Rev. G 48Barracuda 5400.1 Product Manual, Rev. G Page Seagate Technology LLC