User's Manual

Chapter 6 Storage Screens
NSA-2401 User’s Guide
158
207 Spin High
Current
This is the quantity of high current used to spin up the drive.
208 Spin Buzz 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.
209 Offline Seek
Performance
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.
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
Rate
Low This is the number of errors that have resulted from external
vibration 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
Retry Count
This is how many time the magnetic head has changed position.
224 Load Friction Low This is resistance caused by friction in mechanical parts during
operation.
225 Load/Unload
Cycle Count
Low This is the total number of load cycles.
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
Amplification
Count
Low This is the number of attempts to compensate for variations in
platter speed.
228 Power-Off
Retract Cycle
Low This is how many times the magnetic armature was automatically
retracted because the power was cut.
230 GMR Head
Amplitude
This is the amplitude of thrashing (or the distance of repetitive
forward and reverse head motion).
231 Temperature Low This is the hard drive’s temperature.
240 Head Flying
Hours
This is the total time that the head has been positioning.
250 Read Error Retry
Rate
Low This is the number of errors in reading from the disk.
Table 42 S.M.A.R.T. Attributes (continued)
ID
ATTRIBUTE
NAME
BETTER DESCRIPTION