Seagate ST340015ACE manual Acoustics, Acoustic mode, Fluid Dynamic Bearing FDB motor acoustics

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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


ST340015ACE	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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Contents Page Page Page Page Contents Seagate Technology support services Barracuda 5400.1 Product Manual, Rev. GList of Figures Barracuda 5400.1 Product Manual, Rev. G Introduction Barracuda 5400.1 Product Manual, Rev. G Drive specifications Specification summary tableDrive specification ST340015ACE 50,000 Humidity SeaShield Default logical geometry LBA modePhysical organization Physical characteristics ATAPower specifications Seek timeStart/stop times Typical seek times msec Read WriteBarracuda 5400.1 Product Manual, Rev. G Power consumption Spinup powerSeek mode Read/write power and currentBarracuda 5400.1 Product Manual, Rev. G Typical 5V startup and operation current profile Power-management modes Active modeIdle mode Conducted noiseSleep mode Idle and Standby timersEnvironmental specifications Ambient temperature Temperature gradient Wet bulb temperatureHumidity Relative humidity AltitudeBarracuda 5400.1 Product Manual, Rev. G Shock Operating shockNonoperating shock VibrationAcoustic mode AcousticsFluid Dynamic Bearing FDB motor acoustics Model Idle Quiet seek Performance seekReliability Performance Reference Test Description Level StandardAgency certification Safety certification Electromagnetic compatibilityKorean RRL FCC verification Barracuda 5400.1 Product Manual, Rev. G Configuring and mounting the drive Handling and static discharge precautionsBreather filter hole precautions Breather filter hole locationDrive as master with a non-ATA-compatible slave Cable select optionUltra ATA/100 cable Drive mountingMaster SlaveMounting dimensions-top, side and end view Barracuda 5400.1 Product Manual, Rev. G ATA interface signals and connector pins ATA interfaceO pins and supported ATA signals Command name Command code in hex ATA-standard commands EC HCommand name Command code in hex Identify Device command ATA-standard security commandsWord Description Value 0C5AHXxxxH Xx3FH Description if bit is set to Bit Set Features command 0CHF1H Report full capacity available 4 S.M.A.R.T. commands Code in features Register A.R.T. commandSeagate Technology support services Online Services Internet MySeagateAutomated Phone Services 40Barracuda 5400.1 Product Manual, Rev. GUSA/Canada/Latin America Support Services European Support Services Africa/Middle East Support ServicesAsia/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

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