Thecus N4200 User Manual

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Count 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.
Test Type Set short or long time to test.
Test Result Result of the test.
Test Time Total time of the test.
Bad Block Scan
On the Disks Information screen, you may also perform disk bad block scan,
simply to click “Click to start” to start with. The result is only for reference and
system will not take any action from its result.
The testing result will be stay till system reboot with “Yet to start” displayed as
default.
RAID Information
From the Storage menu, choose the RAID item and the RAID Information screen
appears.
This screen lists the RAID volumes currently residing on the Thecus IP storage. 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.
NOTE
If the Reallocated Sector Count > 32 or Current Pending Sector of a hard disk
drive > 0 , 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 replace those disks as soon as possible.

Thecus N4200 Specifications

General

RAID levels	0, 1, 5, 6, 10, JBOD
Storage drive capacity	- GB
Supported file systems	Ext3, XFS, ZFS
Storage drive interface	Serial ATA
Total installed storage capacity	8 TB
Number of storage drives installed	-
Number of storage drives supported	4
Internal memory	1 GB
Internal memory type	DDR2
Bus type	DMI
Stepping	B0
Tjunction	100 °C
Processor code	SLBLA
Processor cache	1 MB
Processor cores	2
Processor model	D510
System bus rate	- GT/s
Processor family	Intel Atom®
Processor socket	BGA 559
Processor codename	Pineview
Processing Die size	87 mm²
Processor frequency	1.66 GHz
Processor cache type	L2
Processor lithography	45 nm
Processor manufacturer	Intel
Processor package size	22 x 22 mm
Conflict-Free processor	No
Processor operating modes	64-bit
Thermal Design Power (TDP)	13 W
Number of processors installed	1
Physical Address Extension (PAE)	32 bit
Memory bandwidth supported by processor (max)	6.4 GB/s
Maximum internal memory supported by processor	4 GB
Link/Act LED	Yes
Expansion slots	PCI-e x1
Processor ARK ID	43098
Networking features	Gigabit Ethernet
Compatible operating systems	- Windows 2000/7/XP/2003/Vista; - UNIX/Linux; - Mac OS 9 / X
Maximum data transfer rate	1000 Mbit/s
Supported network protocols	TCP/IP, Appletalk, SMB/CIFS, HTTP/HTTPS, FTP, NFS v3, AFP
Security algorithms	256-bit AES
USB 2.0 ports quantity	USB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Display type	OLED
Operating temperature (T-T)	5 - 40 °C
Operating relative humidity (H-H)	0 - 80 %
Number of Processing Die Transistors	176 M
Memory channels supported by processor	Single