Tech specs
Brand
QNAP
Product Line
QNAP
Model
TS-251D
Manufacturer
Qnap
Clock Speed
2 GHZ
Cores
Dual-Core
Max Turbo Speed
2.7 GHZ
Processor Brand
Intel
Processor Number
J4005
Processor Type
Celeron
Processors Installed
1
Total Processor Supported
1
Flash Memory Installed
4 GB
Max Memory Supported
8 GB
Memory Technology
DDR4 SDRAM
RAM Installed
4 GB
iSCSI support
iSCSI
Network Storage Type
NAS server
Optical Drive Type
None
RAID Levels
JBOD, RAID 0, RAID 1
Total Storage Capacity
0 GB
Type
RAID
Compliant Standards
DLNA CERTIFIED, UPnP
Data Link Protocols
Ethernet, Fast Ethernet, Gigabit Ethernet
Features
Access Control List (ACL) support, Apple AirPlay, Bandwidth control, BitTorrent Client, Chromecast support, Cloud backup, DHCP client, DHCP server, DLNA support, Download client, E-mail alert, Event log, Firmware upgradable, FXP support, IFTTT agent, IPv4 and IPv6 dual stack, Jumbo Frames support, LDAP support, Link Aggregation, myQNAPcloud, NAT support, OpenVPN server, Port trunking, Qcontactz, Qfinder Pro, Qsync, Scheduler, SMS alert, Spanning Tree Protocol (STP) support, Static routing, Surveillance station, Syslog support, Teaming support, UPnP Media Server, VJBOD Cloud, VPN client, VPN Server, Wake on LAN (WOL)
Host Connectivity (compact list)
Gigabit Ethernet
Network Services Compatibility
Apple File Protocol (AFP), FTP, HTTP, HTTPS, Microsoft Active Directory (AD), Microsoft CIFS, Network File System v3 (NFS v3), Network File System v4 (NFS v4), Server Message Block (SMB), SFTP, Web-based Distributed Authoring and Versioning (WebDAV)
Network Standard
DDNS, DHCP, FTP, IPSec, iSCSI, L2TP, PPTP, SMB, SMTP, TCP/IP
Remote Management
HTTP, HTTPS, SNMP 2, SNMP 3, SSH, Telnet, TFTP
Expansion Bays
2 (total) / 2 (free) x internal - 3.5
Expansion Slots
1 (total) / 1 (free) x PCI Express 2.0 x4, 2 (total) / 1 (free) x DIMM 288-pin
Interface Provided
1 x Ethernet 1000Base-T - RJ-45, 1 x HDMI output, 2 x USB 3.0 - Type A, 3 x USB 2.0 - Type A
Nominal Voltage
AC 120/230 V
Power Consumption Operational
15.25 watt
Power Provided
65 watt
Storage Operating System
QNAP QTS 4.4.1
Built-in Devices
LED panel
Encryption
SSL, TLS 1.0, TLS 1.1, TLS 1.2
Storage Controller Interface
Serial ATA-600
Max Operating Temperature
40 degree Celsius
Min Operating Temperature
0 degree Celsius
Operating Humidity
5 - 95% (non-condensing)
Operating System Required
Apple MacOS X 10.7 or later, Linux, Microsoft Windows 7 / 8 / 10, Microsoft Windows Server 2003, Microsoft Windows Server 2008 R2, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, UNIX
Operation Type
External power adapter
Sound Emission
16.7 dBA
Supported Devices
2
Country
United States
Features
Built-in cooling fan, Security lock slot (cable lock sold separately)
Installed Devices/Modules
0
Packaged Quantity
1
Security Slot Type
Kensington security slot
Cables
1 x network cable
Included Accessories
6 x flat head screws (for 2.5" HDD), 8 x flat head screws (for 3.5" HDD)
Height
16.8 centimetre
Weight
1.48 kilogram
Width
10.5 centimetre
Depth
22.6 centimetre
Color Category
Blue, White