Drawing No. Sheet No. Revision 5
K6602906
11/46
2003/6/12
3.2 Environmental conditions and reliability
Table 3.2 Environmental conditions and reliability
Item
Ultrastar 15K73-73
Ultrastar 15K73-36
Environmental
operating
5 to 55°C
conditions
Temperature
non-operating
-40 to 70°C
storage/shipping
-40 to 70°C
Temperature gradient
20°C per hour maximum
Humidity
operating
5 to 90%RH
non-operating
5 to 90%RH
Wet bulb temperature
29°C maximum (non condensing)
Atmosphere
No corrosive gas, saline atmosphere
or organic-metal compound
(Example. organic silicon,organic tin)
Altitude
operating
-300 to 3,000 m
non-operating
-300 to 12,000 m
Magnetic field
400 micro Tesla maximum
Shock and
Vibration
operating
9.8 m/s2(1.0G) maximum
vibration
(see Note 6)
non-operating
49 m/s2(5.0G) maximum
Shock
operating
147 m/s2(15G) maximum [11ms]
(see Note 7)
non-operating
735 m/s2(75G) maximum [11ms]
2450m/s2(250G)
maximum
[2ms]
Acoustic noise
Acoustic noise (see Note 8)
3.7 bel average
3.6 bel average
Reliability
Data Reliability (see Note 9)
Recoverable error: 10 error in 1012bits read
Non-recoverable error: 1 error in 1014bits read
Seek error rate (see Note 9)
10 errors in 108 seeks
(see Note 10)
Life
5 years (Surface temperature of HDA is 45°C or less)
Life of the drive does not change in the case that the
drive is used intermittently. (See section 8.6)
MTBF (see Note 11)
Expected 1,200,000 hours
