ZyXEL Communications NSA-2401 User Manual page 157

Table 42 S.M.A.R.T. Attributes (continued)
ATTRIBUTE
ID
NAME
207 Spin High
Current
208 Spin Buzz
209 Offline Seek
Performance
220 Disk Shift
221 G-Sense Error
Rate
222 Loaded Hours
223 Load/Unload
Retry Count
224 Load Friction
225 Load/Unload
Cycle Count
226 Load 'In'-time
227 Torque
Amplification
Count
228 Power-Off
Retract Cycle
230 GMR Head
Amplitude
231 Temperature
240 Head Flying
Hours
250 Read Error Retry
Rate
NSA-2401 User's Guide
BETTER DESCRIPTION
This is the quantity of high current used to spin up the drive.
This is the number of buzz routines to spin up the drive. When the
arm holding the read/write heads is stuck, the motor driving it tries
to oscillate the arm to free it. This causes an audible vibration.
This is the hard drive's seek performance during offline
operations. Offline operations are tests the drive does itself as
opposed to those that an external diagnostic tool has it do. Seek
performance is how quickly the drive moves from track to track.
Low This is how far the disk has moved relative to the spindle (this
kind of shift is usually due to shock).
Low This is the number of errors that have resulted from external
vibration and shock.
This is how long the hard drive has operated under data load (this
requires movement of the magnetic head armature).
This is how many time the magnetic head has changed position.
Low This is resistance caused by friction in mechanical parts during
operation.
Low This is the total number of load cycles.
This is the total time that the magnetic heads actuator has had a
load (not been in the parking area).
Low This is the number of attempts to compensate for variations in
platter speed.
Low This is how many times the magnetic armature was automatically
retracted because the power was cut.
This is the amplitude of thrashing (or the distance of repetitive
forward and reverse head motion).
Low This is the hard drive's temperature.
This is the total time that the head has been positioning.
Low This is the number of errors in reading from the disk.
Chapter 6 Storage Screens
157