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| SPECIFICATIONS | |
| Brand | QNAP |
| Model | TS-251A-2G |
| Processor | 14 nm 1.6 GHz Intel Celeron N3060 dual-core (up to 2.48 GHz) |
| Security | AES-NI hardware encryption acceleration | 1x Kensington security slot |
| System Memory | 2 GB DDR3L (2 x 1 GB) | Max Memory: 8 GB | Memory Slots: 2 x SODIMM DDR3L (identical DDR3L modules for dual-DIMM configurations) |
| Flash Memory | 4 GB pre-loaded with QTS system |
| Drives Supported | 2x 3.5"/2.5" SATA 6 Gb/s HDDs or SSDs |
| LAN | 2x Gigabit Ethernet ports |
| Ports | 3x USB 3.0 Type-A ports (Front: 1, Rear: 2) | 1x USB 3.0 micro-B port (QuickAccess) | 1x HDMI | 1x 3.5 mm microphone jack | 1x 3.5 mm line-out jack | 1x system maintenance port |
| Card Reader | SD |
| Supported Resolution | Up to 3840 x 2160 @ 30 Hz |
| LED Indicators | Status/Power, USB, HDD 1, HDD 2 |
| Controls | Power/Status, USB one-touch backup, and reset buttons |
| IR Receiver | Yes, supports QNAP RM-IR002 and MCE-compliant remote controls |
| Noise Level | 18.3 dBA |
| Power Consumption | System sleep: 0.72 W | HDD standby? 7.9 W | In operation? 16.2 W (with 2 x 2 TB HDDs) |
| Power | 100 to 240 VAC, 65 W AC power adapter |
| Cooling | 1x 70 mm fan (12 VDC) |
| Operating Temperature | 32 to 104°F / 0 to 40°C |
| Humidity | 5 to 95% RH (non-condensing) |
| Operating System | QTS 4.2 (embedded Linux) |
| Client OS Support | Windows 7, Windows 8, Windows 10 | Windows Server 2003, 2008 R2, 2012, 2012 R2 | Mac OS X | Linux and UNIX |
| Supported Browsers | Microsoft Internet Explorer 10+, Google Chrome, Apple Safari 7+, Mozilla Firefox |
| 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 Support | Internal Hard Drive: EXT4 | External Hard Drive: EXT3, EXT4, NTFS, FAT32, HFS+ |
| Networking | TCP/IP (IPv4 & IPv6: Dual Stack)1 | Dual Gigabit NICs with jumbo frame (failover, multi-IP settings, port trunking/NIC teaming) | Service binding based on network interfaces | Squid Proxy server & Proxy client | Protocols: CIFS/SMB, AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, and SMSC | UPnP & Bonjour Discovery |
| Security Support | Network access protection with auto-blocking: SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP | CIFS host access control for shared folders | FIPS 140-2 validated AES 256-bit volume-based and shared folder data encryption 2 | Importable SSL certificates | Instant alerts via email, SMS, beep, and push service | 2-step verification |
| Storage Management | QNAP flexible Volume/LUN with thin provisioning and space reclaim | Disk volume types: RAID 0, 1, JBOD, single | Supports volume/LUN snapshots, up to 256 per system (4 GB System RAM required) | SSD read-only/read-write cache |
| Power Management | Wake on LAN | Scheduled power on/off | Automatic power on after power recovery | USB and network UPS support with SNMP management | System sleep mode (S3) |
| iSCSI (IP SAN) | iSCSI target with multi-LUNs per target (Up to 256 targets/LUNs combined) | Supports LUN mapping & masking | Online LUN capacity expansion | Support for SPC-3 persistent reservation | Supports MPIO & MC/S | 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 |
| Dimensions (H x W x D) | 169 x 102 x 219 mm |
| Weight | 1.3 kg | Warranty Information |
| Warranty | 2 Year Warranty |
| Manufacturer's Site | Visit the manufacturer's website |
|---|---|
| Product Link | Visit the manufacturer's page for this product |
