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QNAP TS-251A User Manual

QNAP TS-251A
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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright © 2007 Free Software Foundation, Inc. <http://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies of this license document, but
changing it is not allowed.
Preamble
The GNU General Public License is a free, copy left license for software and other kinds of
works.
The licenses for most software and other practical works are designed to take away your
freedom to share and change the works. By contrast, the GNU General Public License is
intended to guarantee your freedom to share and change all versions of a program--to
make sure it remains free software for all its users. We, the Free Software Foundation, use
the GNU General Public License for most of our software; it applies also to any other work
released this way by its authors. You can apply it to your programs, too.
When we speak of free software, we are referring to freedom, not price. Our General Public
Licenses are designed to make sure that you have the freedom to distribute copies of free
software (and charge for them if you wish), that you receive source code or can get it if you
want it, that you can change the software or use pieces of it in new free programs, and that
you know you can do these things.
To protect your rights, we need to prevent others from denying you these rights or asking
you to surrender the rights. Therefore, you have certain responsibilities if you distribute
copies of the software, or if you modify it: responsibilities to respect the freedom of others.
For example, if you distribute copies of such a program, whether gratis or for a fee, you
must pass on to the recipients the same freedoms that you received. You must make sure
that they, too, receive or can get the source code. And you must show them these terms so
they know their rights.
Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright
on the software, and (2) offer you this License giving you legal permission to copy,
distribute and/or modify it.

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QNAP TS-251A Specifications

General IconGeneral
Chassis typeTower
Cooling typeActive
Fan diameter70 mm
Number of fans1 fan(s)
Cable lock slotYes
Housing material-
Cable lock slot typeKensington
RAID levels0, 1, JBOD
Storage drive size2.5/3.5 \
Storage drive capacity- GB
Supported file systemsFAT32, HFS+, NTFS, ext3, ext4
Storage drive interfaceSerial ATA III
Storage drives installedNo
Supported storage drive typesHDD & SSD
Total installed storage capacity0 TB
Number of storage drives installed0
Number of storage drives supported2
SteppingD1
Tjunction90 °C
Processor codeSR2KN
Processor cache2 MB
Processor modelN3060
System bus rate5 GT/s
Processor familyIntel® Celeron®
Processor seriesIntel Celeron N3000 series
Processor socketBGA 1170
Processor codenameBraswell
Processor frequency1.6 GHz
Processor cache typeL2
Processor lithography14 nm
Processor manufacturerIntel
Processor package size25 x 27 mm
CPU configuration (max)1
PCI Express slots version2.0
Processor boost frequency2.48 GHz
Processor operating modes64-bit
PCI Express configurations1x2+2x1, 1x4, 2x2, 4x1
Thermal Design Power (TDP)6 W
Scenario Design Power (SDP)4 W
On-board graphics card modelIntel® HD Graphics 400
Maximum internal memory supported by processor8 GB
Memory slots2 x SO-DIMM
Internal memory4 GB
Internal memory typeDDR3L
Ethernet LAN data rates10, 100, 1000 Mbit/s
Supported network protocolsCIFS/SMB, AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, and SMSC
USB 2.0 ports quantityUSB 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.
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity3
TypeNAS
Noise level18.3 dB
Device classHome & Home Office
Share folderWindows Server 2003, Windows Server 2003 R2, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 R2 x64, Windows Server 2008 x64, Windows Server 2012, Windows Server 2012 R2
Backup featuresCloud, iSCSI LUN
Browser supportedMicrosoft Internet Explorer 10+, Mozilla Firefox 8+, Apple Safari 4+, Google Chrome
Security algorithms256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Compatible memory cardsSD
Processor ARK ID91832
Operating temperature (T-T)0 - 40 °C
Operating relative humidity (H-H)5 - 95 %
Cables includedAC, LAN (RJ-45)
Number of screws14
Power supply locationExternal
Operating system version4.2
Operating system installedQNAP Turbo System
Number of execution units12
Maximum number of PCI Express lanes4
Memory types supported by processorDDR3L-SDRAM
Memory channels supported by processorDual
Intel Identity Protection Technology version1.00
Intel Small Business Advantage (SBA) version0.00
On-board graphics card base frequency320 MHz
On-board graphics card DirectX version12.0
On-board graphics card burst frequency600 MHz
Weight and Dimensions IconWeight and Dimensions
Depth219 mm
Width102 mm
Height169 mm

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