Thecus N4200 User Manual

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This is excellent for complete data security.
RAID 5
RAID 5 offers data security and it is best suited for networks that perform many
small I/O transactions at the same time, as well as applications that require data
security such as office automation and online customer service. Use it also for
applications with high read requests but low write requests.
RAID 5 includes disk striping at the byte level and parity information is written to
several hard disk drives. If a hard disk fails the system uses parity stored on each of
the other hard disks to recreate all missing information.
RAID 6
RAID 6 is essentially an extension of RAID level 5 which allows for additional fault
tolerance by using a second independent distributed parity scheme (dual parity)
Data is striped on a block level across a set of drives, just like in RAID 5, and a
second set of parity is calculated and written across all the drives; RAID 6 provides
for an extremely high data fault tolerance and can sustain two simultaneous drive
failures.
This is a perfect solution for mission critical applications.
RAID 10
RAID 10 is implemented as a striped array whose segments are RAID 1 arrays. RAID
10 has the same fault tolerance as RAID level 1.
RAID 10 has the same overhead for fault-tolerance as mirroring alone. High I/O
rates are achieved by striping RAID 1 segments.
Under certain circumstances, RAID 10 array can sustain up to 2 simultaneous drive
failures
Excellent solution for applications that would have otherwise gone with RAID 1 but
need an additional performance boost.
JBOD
Although a concatenation of disks (also called JBOD, or "Just a Bunch of Disks") is
not one of the numbered RAID levels, it is a popular method for combining multiple
physical disk drives into a single virtual one. As the name implies, disks are merely
concatenated together, end to beginning, so they appear to be a single large disk.
As the data on JBOD is not protected, one drive failure could result total data loss.
Stripe Size
The length of the data segments being written across multiple hard disks. Data is
written in stripes across the multiple hard disks of a RAID. Since multiple disks are
accessed at the same time, disk striping enhances performance. The stripes can
vary in size.

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