Filter
Top Products
CHEETAH 15K.7 SAS PRODUCT MANUAL, REV. F 26
6.4.4 Shock and vibration
Shock and vibration limits specified in this document are measured directly on the drive chassis. If the drive is installed in an
enclosure to which the stated shock and/or vibration criteria is applied, resonances may occur internally to the enclosure
resulting in drive movement in excess of the stated limits. If this situation is apparent, it may be necessary to modify the
enclosure to minimize drive movement.
The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four
methods shown in Figure 8, and in accordance with the restrictions of Section 10.3.
6.4.4.1 Shock
a. Operating—normal
The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding:
• 15 Gs at a duration of 11 msec (half sinewave)
• 20 Gs at a duration of 2 msec (half sinewave)
• 60 Gs at a duration of 2 msec (half sinewave) when performing reads only
Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once every 2 seconds.
b. Operating—abnormal
Equipment, as installed for normal operation, does not incur physical damage while subjected to intermittent shock not
exceeding 40 Gs at a duration of 11 msec (half sinewave). Shock occurring at abnormal levels may promote degraded
operational performance during the abnormal shock period. Specified operational performance will continue when normal
operating shock levels resume. Shock may be applied in the X, Y, or Z axis. Shock is not to be repeated more than once
every 2 seconds.
c. Non-operating
The limits of non-operating shock shall apply to all conditions of handling and transportation. This includes both isolated
drives and integrated drives.
The drive subjected to nonrepetitive shock not exceeding the three values below, shall not exhibit device damage or
performance degradation.
• 80 Gs at a duration of 11 msec (half sinewave)
• 300 Gs at a duration of 2 msec (half sinewave)
• 150 Gs at a duration of 0.5 msec (half sinewave)
Shock may be applied in the X, Y, or Z axis.
d. Packaged
disk drives shipped as loose load (not palletized) general freight will be packaged to withstand drops from heights as
defined in the table below. For additional details refer to Seagate specifications 30190-001 (under 100 lbs/45 kg) or
30191-001 (over 100 lbs/45 Kg).
PACKAGE SIZE PACKAGED/PRODUCT WEIGHT DROP HEIGHT
<600 cu in (<9,800 cu cm) Any 60 in (1524 mm)
600-1800 cu in (9,800-19,700 cu cm) 0-20 lb (0 to 9.1 kg) 48 in (1219 mm)
>1800 cu in (>19,700 cu cm) 0-20 lb (0 to 9.1 kg) 42 in (1067 mm)
>600 cu in (>9,800 cu cm) 20-40 lb (9.1 to 18.1 kg) 36 in (914 mm)
Drives packaged in single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight
shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent.