Seagate ST360014A ユーザーズマニュアル

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Barracuda 7200.7 Product Manual, Rev. E
13
*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.
2.12
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:
2.13
Reliability
Table 1: 
Fluid Dynamic Bearing (FDB) motor acoustics
Acoustic mode
Models
Idle*
Quiet seek
Performance seek
ST3160021A
 
ST3160023A
 
ST3120022A
 
ST3120026A
 
ST380011A
 
ST380013A
 
ST360014A
<2.5 bels (typ)
 
  2.7 bels (max)
2.8 bels (typ)
 
3.0 bels (max)
3.4 bels (typ)
 
3.7 bels (max)
ST340014A
<2.2 bels (typ)
 
  2.4 bels (max)
2.5 bels (typ)
 
2.7 bels (max)
3.1 bels (typ)
 
3.5 bels (max)
Test
Description
Performance
 
level
Reference
 
standard
Electrostatic discharge
Contact, HCP, VCP: 
± 
4
 
kV; Air:
 
± 
8 kV
B
EN 61000-4-2: 95
Radiated RF immunity
80 to 1,000 MHz, 3 V/m, 
 
80% AM with 1 kHz sine
 
900 MHz, 3 V/m, 50% pulse 
modulation @ 200 Hz
A
EN 61000-4-3: 96
 
ENV 50204: 95
Electrical fast transient
± 
1 kV on AC mains, 
± 
0.5 kV on 
external I/O
B
EN 61000-4-4: 95
Surge immunity
± 
1 kV differential, 
±
 2 kV com-
mon, AC mains
B
EN 61000-4-5: 95
Conducted RF immunity
150 kHz to 80 MHz, 3 Vrms, 
80% AM with 1 kHz sine
A
EN 61000-4-6: 97
Voltage dips,interrupts
0% open, 5 seconds
 
0% short, 5 seconds
 
40%, 0.10 seconds
 
70%, 0.01 seconds
C
 
C
 
C
 
B
EN 61000-4-11: 94
Nonrecoverable read errors
1 per 10
14
 bits read, max.
Mean time between failures
600,000 power-on hours  (nominal power, 25°C ambient temperature)
Contact start-stop cycles
 
50,000 cycles
 
(at nominal voltage and temperature, with 60 cycles per hour and a 50% duty cycle)
Service Life
5 Years
Preventive maintenance
None required