ZyXEL Communications NSA210 - Manual (Page 240)

Chapter 10 Package Management
NSA210 User’s Guide
240
The following table describes the labels in this screen.
Table 61 Storage > S.M.A.R.T: Full Summary
LABEL DESCRIPTION
ID This is the identification number used to tag a hard disk attribute.
This is standard across all S.M.A.R.T-enabled storage devices.
However it depends on the storage vendor which attributes it will
allow S.M.A.R.T to diagnose.
Attribute Name This refers to an attribute of the hard disk that S.M.A.R.T can assess.
Attributes describe the hard disk’s physical state, performance, wear-
and-tear, and so on.
Flag This shows a code that S.M.A.R.T uses to determine the current state
of the hard disk.
Value This is a value that corresponds to the Raw Value. Compare this
with the Threshold Value.
S.M.A.R.T compresses the raw value(s) into a digit from 1 to 253,
where 1 indicates the worst scenario while 253 indicates the best
scenario.
The values 100 or 200 usually represent the mean or normal value.
Worst This is the lowest value attained by the hard disk since S.M.A.R.T
started its assessment of the hard disk.
Threshold This is the attribute’s threshold value. If the attribute’s current
normalized value is less than or equal to the threshold, the attribute
has failed. An attribute value close to or below the threshold indicates
the hard drive is no longer reliable.
Type This shows S.M.A.R.T’s assessment of the hard disk.
Old_age indicates end-of-product life from old-age (normal wearing
out) if the attribute value is less than or equal to the threshold.
Pre-fail indicate imminent hard drive failure if the attribute value is
less than or equal to the threshold.
Note that just because an attribute is of the Pre-fail type does not
mean your hard drive is ready to fail. It only means this if the current
normalized value of the attribute is less than or equal to the
threshold.
Updated This indicates when the hard drive updates the value for this
attribute.
• Always means the hard drive updates this attribute during
normal operation and during offline activities.
• Offline means the hard drive only updates this attribute when no
one is accessing the hard drive.