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darkseid · 03-24-2006, 03:22 AM

Its actually not the shock that kilss the HDD as they are built to withstand large amounts of shock for a short time (for instance the speck for operating shock for hitachi 250GB drives is 55G for upto 2ms) however vibration is the killer as the operating values for the same drive are 0.67 horizontal and 0.56G vertical. Typical values for 2.5" drives are around 300G for shock but the vibration spec is the same at 0.67G (http://www.hitachigst.com/hdd/support/4k40/4k40.htm).

In my previous job we fitted systems using 3.5" and 2.5" HDD`s and to be honest (the kit had vibration isolation) the amount of failures for 2.5 and 3.5 where about the same.

Thanks for the link Phatmonky.

03-24-2006, 03:22 AM	#11
darkseid Newbie Join Date: Aug 2005 Posts: 54	Its actually not the shock that kilss the HDD as they are built to withstand large amounts of shock for a short time (for instance the speck for operating shock for hitachi 250GB drives is 55G for upto 2ms) however vibration is the killer as the operating values for the same drive are 0.67 horizontal and 0.56G vertical. Typical values for 2.5" drives are around 300G for shock but the vibration spec is the same at 0.67G (http://www.hitachigst.com/hdd/support/4k40/4k40.htm). In my previous job we fitted systems using 3.5" and 2.5" HDD`s and to be honest (the kit had vibration isolation) the amount of failures for 2.5 and 3.5 where about the same. Thanks for the link Phatmonky.