Seagate Barracuda 7200.9, 500GB ST3500641AV Manual De Usuario
Los códigos de productos
ST3500641AV
Barracuda 7200.9 PATA Product Manual, Rev. C
27
2.10
Acoustics
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.
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)
*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.
Table 13:
Fluid Dynamic Bearing (FDB) motor acoustics
Acoustic mode
Idle*
Quiet seek
ST3402111A
2.0 bels (typ)
2.3 bels (max)
2.3 bels (max)
2.4 bels (typ)
2.6 bels (max)
2.6 bels (max)
ST3802110A
2.5 bels (typ)
2.7 bels (max)
2.7 bels (max)
2.7 bels (typ)
2.9 bels (max)
2.9 bels (max)
ST3120213A, ST3120814A, ST3160212A,
ST3160812A
ST3160812A
2.5 bels (typ)
2.7 bels (max)
2.7 bels (max)
2.8 bels (typ)
3.0 bels (max)
3.0 bels (max)
ST3200827A, ST3250824A, ST3250624A,
ST3300622A, ST3300822A
ST3300622A, ST3300822A
2.7 bels (typ)
2.9 bels (max)
2.9 bels (max)
3.0 bels (typ)
3.2 bels (max)
3.2 bels (max)
ST3500641A, ST3500841A, ST3400633A,
ST3400833A
ST3400833A
2.8 bels (typ)
3.0 bels (max)
3.0 bels (max)
3.2 bels (typ)
3.4 bels (max)
3.4 bels (max)