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S.M.A.R.T. Information
Item Description
Tray Number Tray the hard disk is installed in.
Model Model name of the installed hard disk.
Power ON Hours Count of hours in power-on state. The raw value of this attribute
shows total count of hours (or minutes, or seconds, depending
on manufacturer) in power-on state.
Temperature Celsius The current temperature of the hard disk in degrees Celsius
Reallocated Sector
Count
Count of reallocated sectors. When the hard drive finds a
read/write/verification error, it marks this sector as "reallocated"
and transfers data to a special reserved area (spare area).
This process is also known as remapping and "reallocated"
sectors are called remaps. This is why, on a modern hard disks,
you can not see "bad blocks" while testing the surface - all bad
blocks are hidden in reallocated sectors. However, the more
sectors that are reallocated, the more a decrease (up to 10% or
more) can be noticed in disk read/write speeds.
Current Pending
Sector
Current count of unstable sectors (waiting for remapping). The
raw value of this attribute indicates the total number of sectors
waiting for remapping. Later, when some of these sectors are
read successfully, the value is decreased. If errors still occur
when reading sectors, the hard drive will try to restore the data,
transfer it to the reserved disk area (spare area), and mark this
sector as remapped. If this attribute value remains at zero, it
indicates that the quality of the corresponding surface area is
low.
Back Press Back to go back to the Disks Information screen.
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RAID Information
From the Storage menu, choose the RAID item and the RAID List screen
appears.
This screen lists the RAID volumes currently residing on the N8800. From this
screen, you can get information about the status of your RAID volumes, as well
as the capacities allocated for data and iSCSI. There is also a graph which
represents how the RAID volume is currently allocated.
To configure your RAID settings, press the RAID Config button to go to the
RAID Configuration screen.
RAID Information
Item Description
Select Used to select the current RAID volume.
Master RAID The RAID volume currently designated as the Master RAID
volume.
ID ID of the current RAID volume.
NOTE: All RAID IDs must be unique.
RAID Level Shows the current RAID configuration.
Status Indicates status of the RAID. Can read either Healthy,
Degraded, or Damaged.
Disks Used Hard disks used to form the current RAID volume.
Total Capacity Total capacity of the current RAID.
Data Capacity Indicates the used capacity and total capacity used by user
data.
NOTE
If the R
disk dr
warni
bad sec
possi
eallocated Sector Count or Current Pending Sector of a hard
ive is not zero, the status of the disk will show “Warning”. This
ng is only used to alert the system administrator that there are
tors on the disk, and they should replace those disks as soon as
ble.