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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.
Cancel Press Cancel to go back to the Disks Information screen.
RAID List
From the Storage menu, choose the RAID
item and the RAID List screen appears.
This screen lists the RAID volumes currently
residing on the N5200. From this screen,
you can get information about the status of
your RAID volumes, as well as the capacities
allocated for data, USB target, and iSCSI.
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 designates as the Master RAID.
ID ID of the current RAID volume.
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.
USB Capacity Indicates the capacity allocated to USB target mode.
iSCSI Capacity Indicates the capacity allocated to iSCSI.
RAID Config Press this to configure RAID volumes.
Space Allocation Press this to adjust the space allocated for data, USB target
mode, and iSCSI.
NOTE
If the Reallocated Sector Count or Current Pending Sector of a hard disk drive is not
zero, the status of the disk will show “Warning”. This warning is only used to alert
the system administrator that there are bad sectors on the disk, and they should
re
lace those disks as soon as
ossible.
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