ZyXEL Communications 4.6 manual 264

Chapter 10 Packages

Table 89 S.M.A.R.T. Attributes			(continued)
ID	ATTRIBUTE	BETTER	DESCRIPTION
	NAME
220	Disk Shift	Low	This is how far the disk has moved relative to the spindle (this kind of
			shift is usually due to shock).
221	G-Sense Error	Low	This is the number of errors that have resulted from external vibration
	Rate		and shock.
222	Loaded Hours		This is how long the hard drive has operated under data load (this
			requires movement of the magnetic head armature).
223	Load/Unload		This is how many time the magnetic head has changed position.
	Retry Count
224	Load Friction	Low	This is resistance caused by friction in mechanical parts during operation.
225	Load/Unload	Low	This is the total number of load cycles.
	Cycle Count
226	Load 'In'-time		This is the total time that the magnetic heads actuator has had a load
			(not been in the parking area).
227	Torque	Low	This is the number of attempts to compensate for variations in platter
	Amplification		speed.
	Count
228	Power-Off	Low	This is how many times the magnetic armature was automatically
	Retract Cycle		retracted because the power was cut.
230	GMR Head		This is the amplitude of thrashing (or the distance of repetitive forward
	Amplitude		and reverse head motion).
231	Temperature	Low	This is the hard drive’s temperature.
240	Head Flying		This is the total time that the head has been positioning.
	Hours
250	Read Error Retry	Low	This is the number of errors in reading from the disk.
	Rate

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	Media Server User’s Guide