Hitachi HUS157336EL3600 - Manual (Page 11)

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