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QNAP TS-251D-2G 2-Bay Intel Celeron J4005 Dual Core 2.0 GHz 2GB RAM DDR4 Multimedia NAS

QNAP TS-251D-2G 2-Bay Intel Celeron J4005 Dual Core 2.0 GHz 2GB RAM DDR4 Multimedia NAS
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$399.0
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Specifications

  • Product Name:
    QNAP TS-251D-2G 2-Bay Intel Celeron J4005 Dual Core 2.0 GHz 2GB RAM DDR4 Multimedia NAS
  • Model Number:
    TS-251D-2G
  • Brand:
  • Manufacturer Warranty:
    2 Year

Description

1638495652768642




SPECIFICATIONS:

Hardware


CPU

Intel® Celeron® J4025/J4005 2-core/2-thread   processor, burst up to 2.9/2.7 GHz

CPU Architecture

64-bit x86

Graphic Processors

Intel® HD Graphics 600

Floating Point Unit

Y

Encryption Engine

 (AES-NI)

Hardware-accelerated Transcoding

Y

System Memory

2 GB SO-DIMM DDR4 (1 x 2 GB)

Maximum Memory

8 GB (2 x 4GB)

Memory Slot

2 x SO-DIMM DDR4

For dual-DIMM configuration, you must use a pair   of identical DDR4 modules.

Flash Memory

4GB (Dual boot OS protection)

Drive Bay

2 x 3.5-inch SATA 6Gb/s, 3Gb/s

The system is shipped without HDD.
  For the HDD compatibility list, please visit https://www.qnap.com/compatibility/

Drive Compatibility

3.5-inch SATA hard disk drives
  2.5-inch SATA hard disk drives
  2.5-inch SATA solid state drives

Hot-swappable

Y

M.2 Slot

Optional via a QM2 PCIe adapter

SSD Cache Acceleration Support

Y

Gigabit Ethernet Port (RJ45)

1

Expandable with an optional PCIe adapter

5 Gigabit Ethernet Port (5G/2.5G/1G/100M)

Expandable with an optional PCIe adapter

10 Gigabit Ethernet Port

Expandable with an optional PCIe adapter

Wake on LAN (WOL)

Y

Jumbo Frame

Y

PCIe Slot

1
  Slot 1: PCIe Gen 2 x4

PCIe bandwidth limitations will restrict the NAS   10GbE performance.

USB 2.0 port

3

USB 3.2 Gen 1 port

2

USB 3.2 Gen 2 (10Gbps) Port

Optional via a PCIe expansion card

IR Sensor

 (Optional QNAP RM-IR004 remote control)

HDMI Output

1, HDMI 2.0

Form Factor

Tower

LED Indicators

Power/Status, LAN, USB, HDD1-2

Buttons

Power, USB copy, Reset

Dimensions (HxWxD)

168 × 105 × 226 mm

Weight (Net)

1.48 kg

Weight (Gross)

2.58 kg

Operating temperature

0 - 40 °C (32°F - 104°F)

Storage Temperature

-20 - 70°C (-4°F - 158°F)

Relative Humidity

5-95% RH non-condensing, wet bulb: 27˚C (80.6˚F)

Power Supply Unit

External Power Adapter, 65W, 100-240V

Power Consumption: HDD Sleep Mode

8.08 W

Power Consumption: Operating Mode, Typical

15.25 W

Tested with drives fully populated.

Fan

1 x 70mm

Sound Level

16.7 db(A)

System Warning

Buzzer

Kensington Security Slot

Y

Max. Number of Concurrent Connections (CIFS) - with Max. Memory

1500

Software


Operating System

QTS 5.0.0

Supported Client Operating Systems

Apple Mac OS 10.10 or later

Ubuntu 14.04, CentOS 7, RHEL 6.6, SUSE 12 or   later Linux

IBM AIX 7, Solaris 10 or later UNIX

Microsoft Windows 7, 8, 10 and 11

Show more...

Supported Browsers

Apple Safari (latest version)

Google Chrome (latest version)

Microsoft Edge (latest version)

Mozilla Firefox (latest version)

Supported Languages

Chinese (Traditional & Simplified), Czech,   Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian,   Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Romanian, Russian,   Spanish, Swedish, Thai, and Turkish

Storage Pool

Y

SED Storage Pool

Y

Maximum Pool size

308 TB

Maximum number of storage pool

128

Volume Type

Thick, Thin, Static

Maximum volume size

250 TB

Note: At least 4 GB RAM is required.

Maximum number of volume

128

Maximum shared folder size

250 TB

Maximum number of shared folder

512

JBOD Expansion

Y

VJBOD / VJBOD Cloud

Y

iSCSI Service

Y

Fibre Channel Service

Y

LUN Type

Thick, Thin

File-based iSCSI LUN

Y

Block-based iSCSI LUN

Y

Maximum LUN size

250 TB

Note: At least 4 GB RAM is required.

Maximum number of targets LUN

256

LUN feature

LUN Mapping (LUN can be moved between iSCSI and   FC)

LUN Masking

WWPN Aliases Import/Export

FC Port Group

Show more...

Auto Tiering

Y

RAID Type

8-bay (and more): JBOD, Single, RAID 0, 1, 5, 6,   10, 50, 60

6-bay: JBOD, Single, RAID 0, 1, 5, 6, 10, 50

4-bay: JBOD, Single, RAID 0, 1, 5, 6, 10

2-bay: JBOD, Single, RAID 0, 1

RAID Group

To ensure data security, system stability, and   storage performance, the maximum number of drives for a single RAID group is   now 16 (applicable to RAID 5, RAID 6, RAID TP, and subgroups of RAID 50 and   RAID 60). Nevertheless, users can combine multiple RAID groups into a large   storage pool that contains more than 16 drives, using RAID 50, RAID 60, or   RAID 10 as the RAID configuration. This enhancement will only be applied to   new RAID groups. All existing RAID groups and storage systems will not be   affected.

RAID Level Migration

Y

RAID Expansion (by adding Disk)

Y

RAID Expansion (by replacing bigger Disks)

Y

Storage Pool Expansion (by adding RAID Group)

Y

RAID Hot Spare

Global, Local

RAID Sync/Rebuild/Scrubbing

Y

Internal drive

EXT4

External drive

EXT3, EXT4, NTFS, FAT32, HFS+, and exFAT   (optional for ARM model)

Note: To use exFat in certain models you must purchase   an exFAT driver license from License Center.

Disk, Enclosure Locate

Y

Disk S.M.A.R.T. Scan

Y

Disk S.M.A.R.T. Data Migration

Y

Ironwolf Health Management

Y

Secure Erase

Y

SSD Trim

Y

SSD Life Estimation

Y

Disk Roaming

Y

Disk Standby

Y

Volume Snapshot

Y

LUN Snapshot

Y

Minimum Snapshot Interval

5 minutes

Snapshot Retention Policy

Y

Self-serve Snapshot Recovery

Y

Application Consisted Snapshot

Y

Snapshot Full Clone

Y

Snapshot Replica / Vault

Y

SSD read-only Cache

Y

SSD read-write cache

Y

SSD write-only cache

Y

SSD Cache RAID

0, 1, 5, 6, 10

SSD profiling tool

Y

External Device Management

Y

Mount Smart Phone (MTP)

Y

External RAID Device (QNAP so on) Management (External Device Mode)

Y

External RAID Device (QNAP so on) Management (NAS Mode)

Y

File Server

File sharing across Windows, Mac, and Linux/UNIX

Microsoft networking (CIFS/SMB)

Apple networking (AFP)

NFS version 3/4 services

FTP Server

QuFTP

FTP, SFTP and TFTP protocols

FTP over SSL/TLS (explicit FTPS)

FXP support

Maximum FTP connection

1024

File Station (Web)

Y

Object Storage

Y

Local user account

4,096

Local group account

512

Domain user/group account

200,000

Domain Security

Y

Domain Controller

Y

Shared folder permission

Y

Advanced folder permission

, (AFP, CIFS/SMB, FTP, and File Station)

Windows ACL

, (CIFS/SMB)

User quota

Y

Group quota

Y

Folder quota

, (Snapshot shared folder)

Home folder

Y

Resource Monitor

Y

SNMP

V2, V3

Network recycle bin

Recover files deleted using AFP, CIFS/SMB, and   File Station

Automatic cleanup and file type filter

System Log & Notification Center

Log recording: 3,000 event per hour

Smart Fan

Y

Schedule on/off

Y

Internet protocol

IPv4, IPv6

Virtual Switch

Y

Port trunking

, (7 modes)

VLAN

Y

DHCP Server

Y

DDNS (Dynamic Domain Name Service)

Y

Network access protection with auto-blocking

SSH, Telnet, HTTP(S), FTP, CIFS/SMB, and AFP

Security Counselor

Y

Malware Remover

Y

AES 256-bit Volume Encryption validated by FIPS 140-2 CAVP

Y

2-step verification

Y

Allow/Deny List

Y

Access Protection

Y

Service binding

Y

Firewall

Y

vSphere Web Client Plug-in

Y

VMware vSphere VAAI for iSCSI

Y

VMware vSphere VAAI for NAS

Y

Windows ODX

Y

Windows/VMware Snapshot Agent

Y

HTTP/HTTPS Connections

TLS 1.0/1.1/1.2/1.3

Supports WebDAV Connection

Y

Supports Virtual Hosts

32

Qsync

Note: At least 1 GB RAM is required.

[Qsync] Management Mode

User customization, Central

[Qsync] Qsync client supported platforms

Windows, macOS, Ubuntu, Android, and iOS

[Qsync] Maximum number of version control

64

HybridMount

Note: At least 1 GB RAM is required.

[HybridMount] File Cloud Gateway

Concurrent Connections = 20 Upload & 20   Download

[HybridMount] Network Drive Mount

Y

[HybridMount] Free cloud gateway sessions

2

HBS (Hybrid Backup Sync)

Note: At least 1 GB RAM is required.

[HBS (Hybrid Backup Sync)] NAS to NAS backup

Y

[HBS (Hybrid Backup Sync)] NAS to rsync backup

Y

[HBS (Hybrid Backup Sync)] NAS to FTP backup

Y

[HBS (Hybrid Backup Sync)] Cloud Backup

Y

[HBS (Hybrid Backup Sync)] Cloud Sync

Y

[HBS (Hybrid Backup Sync)] 2-way and Active Sync

Y

[HBS (Hybrid Backup Sync)] Backup Deduplication

Y

[HBS (Hybrid Backup Sync)] Real-time backup

Y

[HBS (Hybrid Backup Sync)] Apple Time Machine Backup

Y

[HBS (Hybrid Backup Sync)] External drive backup

Y

[HBS (Hybrid Backup Sync)] Maximum number of backup job

400

Hyper Data Protector

Y

Boxafe

Note: At least 1 GB RAM is required.

[Boxafe] Office 365 Backup

Y

[Boxafe] Google Workspace Backup

Y

[Boxafe] Full-text search

Y

Qsirch

Note: This feature is supported by all QNAP NAS   devices with at least 2 GB of memory

[Qsirch] Previews

Photos, music, videos, PDFs, Gmail, and others

[Qsirch] Integrate Mac Finder

Y

[Qsirch] Advanced picture search

Y

[Qsirch] Search filters

Y

QuMagie

Note: At least 1 GB RAM is required.

[QuMagie] Browse photos

Y

[QuMagie] Virtual and smart albums

Y

[QuMagie] AI-assisted photo management

People, things, places, and others

Antivirus (free)

Y

McAfee (License)

Y

QVPN Service

Note: At least 1 GB RAM is required.

[QVPN Service] Remote Access

PPTP, L2TP/IPSec, OpenVPN, WireGuard, QBelt (QNAP   proprietary)

[QVPN Service] Supportedd utility and mobile app

Windows, macOS, iOS, and Android

[QVPN Service] Supported maximum clients

100

HD Station

Y

LDAP Server

Y

RADIUS

Y

SQL server

Y

License Center

Y

Multimedia Console

Y

Photo Station

Y

Music Station

Y

Video Station

Y

Download Station

Y

Notes Station

Y

Qfiling

Y

Media Streaming add-on

Y

QmailAgent

Y

QuWAN

Y

DA Driver Analyzer

Y

Q'center

Note: The application is available in the App   Center and in virtual appliance marketplaces (VMware vSphere ESXi and   Microsoft Hyper-V).

Q'center Server

Y

Q'center Agent

Y

Connect to Q'center

Y

Virtualization Station

Note: At least 4 GB RAM is required.

[Virtualization Station] Supports Virtual machine instances

Windows, Linux, Unix, and Android

[Virtualization Station] VM importing, exporting, cloning, snapshot   capturing, backup, and restoration

All function is Fine.

[Virtualization Station] Virtual switches

Can create a virtual switch

[Virtualization Station] GPU pass-through

Not support GPU

Container Station

Note: At least 1 GB RAM is required.

[Container Station] Supported type

LXC/LXD and Docker

Note: LXD has been supported after Container   Station 2.4

[Container Station] Docker Hub Registry

Y

[Container Station] Container importing and exporting

Y

[Container Station] Console mode

Y

Linux Station

Y

Supports Linux Station versions

16.04, 18.04, and 20.04

Linux Station Center

Y

QVR Pro

Note: At least 4 GB RAM is required. The maximum   number of channels supported varies by NAS model, network configuration, and   camera settings. For more information, visit https://www.qnap.com/go/qvr-nas-selector.

[QVR Pro] Recording Technique

Index database based

[QVR Pro] License Type

Perpetual

[QVR Pro] User-defined trigger events

Y

[QVR Pro] Metadata

Y

[QVR Pro] QVR Pro Client (Desktop)

Windows, macOS, and QNAP HybridDesk Station

[QVR Pro] QVR Pro Client (Mobile)

Android and iOS

[QVR Pro] Recording camera streams

H.264

[QVR Pro] Free built-in camera channels

8

QVR Elite

Note: At least 1 GB RAM is required. The maximum   number of channels supported varies by NAS model, network configuration, and   camera settings. For more information, visit https://www.qnap.com/go/qvr-nas-selector.

[QVR Elite] Recording Technique

Standard MP4 file based

[QVR Elite] License Type

Subscription-based

[QVR Elite] User-defined trigger events

Y

[QVR Elite] QVR Pro Client (Desktop)

Windows, macOS, and QNAP HybridDesk Station

[QVR Elite] QVR Pro Client (Mobile)

Android and iOS

[QVR Elite] Recording camera streams

H.264

[QVR Elite] Free built-in camera channels

2

QVR Pro Client

Y

[QVR Pro Client] Dynamic View Layout

Y

[QVR Pro Client] Windows

Y

[QVR Pro Client] Mac

Y

[QVR Pro Client] HybridDesktop

Y

[QVR Pro Client] iOS

Y

[QVR Pro Client] Android

Y

QVR Center

Note: At least 4 GB RAM is required.

[QVR Center] Log management

Y

[QVR Center] Central monitoring across multiple servers

Y

QVR Guard

Note: At least 4 GB RAM is required.

[QVR Guard] Failover design

Y

[QVR Guard] Viewing task details

Y

[QVR Guard] Automatic switch between Standby and Takeover modes

Y

QVR Human

Y

QVR Face

The maximum number of channels supported varies   by NAS model, network configuration, and camera settings. For more   information, visit https://www.qnap.com/solution/qvr-face/en-us/

QVR DoorAccess

Y


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