Shock And Vibration - Seagate Cheetah 15K.6 FC ST3146356FC Product Manual

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 11, and in accordance with the restrictions of Section 8.4. Orientation of the
side nearest the I/O connector may be up or down.
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)
• 25 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 intermit-
tent shock not exceeding 40 Gs at a duration of 11 msec (half sinewave). Shock occurring at abnormal lev-
els 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
Disc 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
<600 cu in (<9,800 cu cm)
600-1800 cu in (9,800-19,700 cu cm)
>1800 cu in (>19,700 cu cm)
>600 cu in (>9,800 cu cm)
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.
38
Packaged/product weight
Any
0-20 lb (0 to 9.1 kg)
0-20 lb (0 to 9.1 kg)
20-40 lb (9.1 to 18.1 kg)
Cheetah 15K.6 FC Product Manual, Rev. C
Drop height
60 in (1524 mm)
48 in (1219 mm)
42 in (1067 mm)
36 in (914 mm)