QNAP TS-251+ Personal Cloud NAS Specifications

Hardware
specification
TS-251+-2G
Model
TS-251+-8G
CPU
TS-451+-2G
TS-451+-8G
Intel® Celeron® Quad-core 2.0GHz (up to 2.42GHz)
Floating Point Unit
Hardware-Acclerated Transcoding
GPU
Intel® HD Graphics
System memory
2GB (2 x 1GB)
8GB (2 x 4GB)
2GB (2 x 1 GB)
8GB (2 x 4GB)
8GB
NOTE : T
o install on both DIMM slots, the same type of memory same size, speed, and manufacturer should be
used for each slot
Memory expandable up to
Total memory slots
2
Flash Memory
512MB (DOM)
Max. number of HDDs/SSDs
2
Compatible Drive Type
4
3.5" or 2.5" SATA 6Gb/s, 3Gb/s HDD or SSD, hot swappable
LAN Port
2 Gigabit RJ-45 Ethernet ports, supporting port trunking
USB
2 x USB 3.0 (Front: 1, Rear: 1) & 2 x USB 2.0 (Rear)
LED Indicators
Power/Status, LAN, USB, HDD
Buttons
Power, USB One-Touch-Backup, Reset
IR
Yes (RM-IR002 & MCE)
HDMI
1
Alarm Buzzer
System warning
Form Factor
Tower
Dimensions
168.5 x 102 x 225 mm / 6.63 x 4.02 x 8.86 inch (HxWxD)
Weight (Net / Gross)
Power Consumption (W)
177 x 180 x 235 mm / 6.97 x 7.09 x 9.25 inch
1.28 kg (2.82 lbs) / 2.32 kg (5.11 lbs)
3 kg (6.61 lbs) / 4.3 kg (9.48 lbs)
HDD standby:10.56W / In operation (typical): 18.09W
HDD standby:15.78W / In operation (typical): 33.88W
Operating Temperature
0 - 40 °C
relative humidity
5~95% RH non-condensing, wet bulb: 27°C
Power Supply
External Power Adapter, 60W, 100-240V
External Power Adapter, 90W, 100-240V
1 x quiet cooling fan (7cm,12V DC)
1 x quiet cooling fan (12cm,12V DC)
Windows® sequential Read / Write
(64KB, 2 x GbE)
223 / 225
225 / 224
Windows® sequential Read / Write
Encryption (64KB, 2 x GbE)
205 / 178
204 / 158
Fan
Accessories
Category
Order No.
Description
UX-500P
QNAP 5-bay Expansion unit
185.2 (H) x 210.6 (W) x 235.4 (D) mm
7.29 (H) x 8.29 (W) x 9.27 (D) inch, 5.1 kg / 11.24 lbs
UX-800P
QNAP 8-bay Expansion unit
185.2 (H) x 298.2 (W) x 235.4 (D) mm
7.29 (H) x 11.74 (W) x 9.27 (D) inch, 7.3 kg / 16.08 lbs
RAM-2GDR3L-SO-1600
2GB DDR3 RAM, 1600 MHz, SO-DIMM
RAM-4GDR3L-SO-1600
4GB DDR3 RAM, 1600 MHz, SO-DIMM
RAM-8GDR3L-SO-1600
8GB DDR3 RAM, 1600 MHz, SO-DIMM
RM-IR002
QNAP IR-002 remote conyrol (included)
Expansion units
RAM
Remote control
Designs and specifications are subject to change without notice.
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Software specification
Operating System
Domain Authentication Integration
• QTS 4.2 (embedded Linux)
• Microsoft Active Directory (AD) & Domain
Controller support
• LDAP server, LDAP client
• Domain users login via CIFS/SMB, AFP,
FTP,and File Station
Supported Client OS
• Windows 7 (32/64-bit), Windows 8
(32/64-bit), Windows Server 2003/2008
R2/2012/2012R2
• Apple Mac OS X
• Linux & UNIX
Supported Browsers
• Microsoft Internet Explorer 10+
• Mozilla Firefox 8+
• Apple Safari 4+
• Google Chrome
Multilingual Support
• Chinese (Traditional & Simplified), Czech,
Danish, Dutch, English, Finnish, French,
German, Greek, Hungarian, Italian,
Japanese, Korean, Norwegian, Polish,
Portuguese (Brazil), Romanian, Russian,
Spanish, Swedish, Thai, Turkish
File System
• Internal Hard Drive: EXT4
• External Hard Drive: EXT3, EXT4,
NTFS,FAT32, HFS+
Networking
• TCP/IP (IPv4 & IPv6: Dual Stack)
• Dual Gigabit NICs with jumbo frame
(failover, multi-IP settings, port trunking/
NIC teaming)
• Service binding based on network
interfaces
• Proxy server (Squid Proxy Server via App
Center)
• Proxy client
• DHCP client, DHCP server
• Protocols: CIFS/SMB, AFP (v3.3), NFS(v3),
FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet,
SSH, iSCSI, SNMP, SMTP, and SMSC
• UPnP & Bonjour Discovery
• USB Wi-Fi Adapter Support
* Not all services supports IPv6.
Security
• Network access protection with autoblocking: SSH, Telnet, HTTP(S), FTP, CIFS/
SMB, AFP
• CIFS host access control for shared folders
• FIPS 140-2 validated AES 256-bit volumebased and shared folder data encryption*
• AES 256-bit external drive encryption*
• Importable SSL certificates
• Instant alert via E-mail, SMS, beep,and
Storage Management
• QNAP flexible Volume/LUN with thin
provisioning and space reclaim
• RAID 0/1/5/6/10, + hot spare
• Supports storage pools
• Online volume expansion&storage pool
expansion
• Online RAID capacity expansion and online
RAID level migration
• SMART data migration
• Storage expansion via max 2 QNAP UX500P/UX-800P expansion units
• JBOD enclosure roaming
• SSD read-only/read-write cache
• Bad block scan, recovery, and hard drive
S.M.A.R.T.
• RAID recovery
• Bitmap support
Power Management
• Wake on LAN
• Internal hard drive standby mode
• Scheduled power on/off
• Automatic power on after power recovery
• USB and network UPS support with SNMP
management
• System sleep mode (S3)
Access Right Management
• Batch user creation
• Import/Export users
• User quota management
• Local user access control for CIFS, AFP,
FTP,and WebDAV
• Application access control for Photo
Station, Music Station, Video Station, and
File Station
• Subfolder permissions support for CIFS/
SMB, AFP, FTP, and File Station
myQNAPcloud Service
• Private cloud storage and sharing
• Free host name registration (DDNS)
• Supports myQNAPcloud SSL certificates
(DDNS)
• Auto router configuration (via UPnP) •
Web-based file manager with HTTPS 2048
- bit encryption
• CloudLink for remote access without any
complicated router setup
• myQNAPcloud connect for easy VPN
connection (Windows VPN utility)
Qsync
• Syncs files across multiple devices with
SSL support
• Selective synchronization for only syncing
specific folders
• Use team folders as a file center for greater
team collaboration (maximum sync
tasks:32)
• Shares files by links via e-mail
• Policy settings for conflicting files and file
type filter support
• Version control: up to 64 versions.
• Incremental synchronization for HDD
space
Web Administration
• Movable Icons and personalized desktop •
• Smart toolbar and dashboard for neat
system status display
• Smart fan Control
• Dynamic DNS (DDNS)
• SNMP (v2 & v3)
• Resource monitor
• Network recycle bin for file deletion
via CIFS/SMB, AFP, and File Station
-Automatic Cleanup
- File Type Filter
• Comprehensive logs (events & connection)
• Syslog client/server
• System settings backup and restore
• Restore to factory default
• Mobile app: Qmanager for remote system
monitoring & management
File Server
• File sharing across Windows, Mac, and
Linux/UNIX
• Windows ACL
• Advanced folder permissions for CIFS/
SMB, AFP, FTP
• Shared folder aggregation (CIFS/SMB)
FTP Server
• FTP over SSL/TLS (Explicit)
• FXP support
• Passive ftp port range control
File Station
• Supports mounting a Cloud Drive (such
as Google Drive, Dropbox, Microsoft
OneDrive, Amazon Cloud Drive, Yandex
Disk and Box).
• Supports mounting remote shared folders
through FTP, WebDAV or Microsoft
networking (SMB/CIFS)
• Supports opening documents via Office
Online, Google Docs or Chrome Extension
(Edit Office files in Google Docs, Sheets,
and Slides)
• Supports ISO Mounting (Up to 256 ISO
Files)
• Supports thumbnail display of multimedia
files
• Supports sharing download links and
upload links
• Supports sharing to other NAS users
• Drag-n-drop Files via Chrome and Firefox
Browsers
• Photo, music, and video preview and
playback
• File Compression (ZIP or 7z)
1. Creation of and sending download links
for sharing public files with expiration
date and password protection
2. Supports displaying subtitles (*.SRT, UTF8 format)
1.Video seeking support for video
playback during on-the-fly transcoding
2.Supports slideshow playback in media
viewer
• Mobile App: Qfile for file browsing and
management
Backup Station
• Remote replication server (over rsync) •
Real-time remote replication (RTRR) to
another QNAP NAS or FTP server
• Works as both RTRR server & client with
bandwidth control
• Real-time & scheduled backup
• Backup versioning for RTRR
• Snapshot support for RTRR/Rsync
• Encryption, compression, file filter, and
transfer rate limitation
• Encrypted replication between QNAP NAS
servers
• Desktop backup with QNAP NetBak
Replicator for Windows
• Apple Time Machine backup support
• Data backup to multiple external storage
devices
• Third party backup software support:
Veeam backup & replication, Acronis True
Image, Arcserve backup, emc retrospect,
Symantec Backup Exec, etc.
Cloud Backup Station
• Amazon S3
• Amazon Glacier
• WebDAV-based cloud storage
• Microsoft Azure
• OpenStack
Container Station
• Supports LXC and Docker
• Supports CPU/Memory management
• Download applications from the built-in
Docker Hub Registry
• Supports one-click installation, container
export/import & console mode
• Supports mounting NAS shared folders
and data-only containers
• Supports auto port forwarding
• Supports auto-start containers
• Supports downloading Docker certificates
Print Server
• Max number of printers: 3
• Supports Internet Printing Protocol • Print
job display and management • IP-based
and domain name-based privilege control
iTunes Server
• Audio and video sharing for Windows &
Mac iTunes
AirPlay& Chromecast
• Streams videos, photos and music from
NAS to Apple TV or Chromecast via File
Station, Music Station, Photo Station,
Video Station or mobile app (Qfile, Qmusic,
Qphoto or Qvideo). Note: The Media
Streaming add-on app must be installed
from the QTS App Center.
HD (HybridDesk) Station 3.1
• Playback videos, music, photos on TV with
Kodi via HDMI
• Watch various online contents
• Web browsers (Chrome, Firefox)
• Supports international keyboards, input
and mouse
• Supports QNAP Qremote app and the
official Kodi remote app
• Supports user login permissions
• A variety of applications are available
including Skype, Plex Home Theater, and
more
• Up to 7.1 channel audio passthrough is
supported
Note:
- The playback and quality of some video
files may be affected by the system’s
CPU and GPU decoding abilities.
Transcode Management
• Transcode video files to 240p, 360p, 480p,
720p and 1080p resolution
• Automatic video transcoding for watched
folders
• Hardware accelerated transcoding support
• Embed subtitles into videos for
background transcoding
• Supports VM cloning
• Supports VM snapshots
• Supports VM backup and restore
• Support three different networking modes:
Isolated, External-only and Bridged
• VM console can be displayed via HDMI
output - QVM
• HTML5-based shared remote console
Storage Plug & Connect
• Creating and mapping shared folders by
QNAP Windows Qfinder
• Creation of and connection to iSCSI target/
LUN
iSCSI (IP SAN)
• SCSI target with multi-LUNs per target (Up
to 256 targets/LUNs combined)
• Supports LUN mapping & masking
• Online LUN capacity expansion
• iSCSI LUN backup, one-time snapshot, and
restoration
• iSCSI connection and management by
QNAP Windows Qfinder
• Virtual disk drive (via iSCSI initiator)
• Stack chaining master
• Max No. of virtual disk drives: 8
Surveillance Station
• Supports over 3,000 IP cameras
• Includes 2 free camera licenses, up to 40
camera channels via additional license
purchase
• Instant playback to check recent events
• Online editing to edit cameras during live
view
• Visual aid by e-map
• Playback and speed control using the
shuttle bar
• Video preview on playback timeline
• Intelligent video analytics (IVA) for
advanced video searching
• Surveillance client for Mac
• Mobile surveillance app: Vmobile (iOS and
Android)
• Mobile recording app: Vcam (iOS and
Android)
VPN Server
• Secure remote access: PPTP&L2TP/
IPsec&OpenVPN VPN services
• Max number of clients: 30
VPN Client
• Supported VPN protocols: PPTP &OpenVPN
services
• PPTP Authentication: PAP, CHAP, MSCHAP, MS-CHAPv2
• PPTP Encryption: None, AES 40/128 bit,
AES 256 bit
• OpenVPN Encryption: None, AES 40/128
bit, AES 256 bit
• Transmission package monitor • OpenVPN
port control
• OpenVPN link compression
DLNA Server
• Supports DLNA/UPnP TVs and players such
as PlayStation 4 and Xbox 360/One
• Supported audio formats:
• Support CUE indexing file for APE, FLAC
audio format.
• Video and Audio On-the-fly Transcoding
*DRM-protected content is not supported.
Q'center (NAS CMS)
• Multiple NAS monitoring
• Utilization history reports
• Unified configuration management
• Visual display reports
• Monitor NAS behind NAT router with
Q’center Assistant
• Virtual appliances supported for Hyper-V
and VMware
App Center
• Official and community software addons such as Photo Station, Music Station,
Video Station, Download Station, Signage
Station and Notes Station, etc.
Designs and specifications are subject to
change without notice.
Virtualization Station
• Supports Virtual Machine (VM) creation to
run operating systems such as Windows,
Linux, Unix and Android
• Supports VM import and export
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