Chapter 5 Storage Manager
NAS Series User’s Guide
76
The following table describes the labels in this screen.
5.3.3.2 SMART Info
Use this screen to display more details information about the volume.
Click S.M.A.R.T Info in the S.M.A.R.T Overview screen to display the following.
Table 34 S.M.A.R.T Overview
LABEL DESCRIPTION
A This shows the current status of the hard disk (a green circle with a check mark indicates healthy).
B This shows the overall health of the hard disk based on S.M.A.R.T diagnostics.
C This shows the temperature of the hard disk in degrees celsius (
o
C) and fahrenheit (
o
F).
Status This shows your hard disk’s performance (Good or Bad).
Power_On_Ho
urs
This field shows the number of hours the hard disk has been in power-on state since it was
produced.
Spin_Retry_Co
unt
This field shows the total number of spin start retry attempts. This is the number of attempts to spin
up to fully operational speed the hard drive has made when the first attempt did not succeed. An
increase in this value is an indicator of hard disk mechanical subsystem problems.
Reallocated_S
ector_Ct
This field shows the total number of reallocated sectors on the hard drive. When the hard drive
detects a read/write/verification error, it marks the sector as “reallocated” and transfers the data
to a specially reserved (spare) area. The process is also known as remapping with “reallocated”
sectors known as remaps. The more sectors the hard disk has to reallocate, the slower read and
write speeds become.
Model Family This field shows the model family of the hard disk.
Device Model This field shows the hard disk model number that uniquely identifies a hard disk.
Serial Number This field shows this individual hard disk’s serial number from the manufacturer.
LU WWN
Device Id
This field shows the hard disk’s Logical Unit World Wide Name Device Identifier.
Firmware
Version
This field shows the version number of the hard disk’s internal operating software.
User Capacity This field shows the hard disk’s usable size.
Sector Sizes This field shows the sector size of the hard disk. A sector is the smallest physical storage unit on a
hard disk. Normally it is 512 bytes.
Rotation Rate This field shows the rotational speed of the hard disk, measured in revolutions per minute (rpm).
ATA Version This field shows the hard disk’s Advanced Technology Attachment version number.
SATA Version This field shows the hard disk’s Serial ATA (SATA) version number.
Local Time This field shows the local time that the hard disk is using.
SMART
support
This field shows whether or not the hard disk is SMART-capable.
SMART
support
This field shows whether or not the hard disk has SMART monitoring turned on.
Close Click this button to close the screen.
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