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QNAP TS-451U-US Intel Celeron 2.41GHz/ 1GB RAM/ 2GbE/ 4SATA3/ USB3.0/ 4-Bay 1U Rackmount NAS for Home & SOHO

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  • QNAP TS-451U-US Intel Celeron 2.41GHz/ 1GB RAM/ 2GbE/ 4SATA3/ USB3.0/ 4-Bay 1U Rackmount NAS for Home & SOHO
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  • Mfr Part Number: TS-451U-US
  • Hardware:
    • CPU: Intel Celeron Processor (2.41GHz, Burst Up to 2.58GHz, Dual-Core)
    • Memory: 1GB DDR3L RAM, (expandable up to 8GB)
    • Flash Memory: 512MB
    • HDD Capacity: 4x 3.5" or 2.5" SATA3/SATA2 Hard Drive or SSD
    • HDD Tray: 4x Hot-swappable and lockable Trays
    • LAN Port: 2x Gigabit RJ45 Ethernet Ports
    • LED Indicators: Status, LAN, USB, HDD 1, HDD 2, HDD3, HDD4
    • USB: 3x USB 3.0 Ports (2 rear, 1 front), 2x USB 2.0 Ports (rear); USB UPS, etc
    • Buttons: Power, USB One-Touch-Copy, reset
    • Alarm Buzzer: System Warning
    • Operating System: QTS 4.1 (Embedded Linux)
  • Networking:
    • TCP/IP (IPv4 & IPv6:Dual Stack) - Not all services support IPv6
    • Jumbo frame support
    • Proxy server (Squid package available in 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 802.11ac/a/n adapter support
  • Security:
    • 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 data encryption
    • AES 256-bit External Drive Encryption
    • Importable SSL Certificates
    • Instant Alert via E-mail, SMS, Beep
  • Storage Management:
    • QNAP flexible Volume/LUN with thin provisioning and space reclaim
    • RAID 0,1, 5, 6, 10, 5+spare
    • Global hot spare
    • Supports storage pool
    • Online volume expansion
    • Online storage pool expansion
    • Online RAID capacity expansion and online RAID level migration
    • Storage expansion via a QNAP UX-1200U-RP/UX-800U-RP expansion unit
    • Bad block scan and hard drive S.M.A.R.T.
    • Bad block recovery
    • RAID recovery
    • Bitmap support
  • File System:
    • Internal HDD: EXT4
    • External HDD: EXT3, EXT4, NTFS, FAT32, HFS+
  • 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
    • 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
    • Synchronizes with cloud storage: Amazon S3, ElephantDrive, Symform, Dropbox, and Google Drive
    • Third party backup software support: Veeam backup & replication, Acronis True Image, Arcserve backup, emc retrospect, Symantec Backup Exec, etc.
  • Form Factor: 1U Rackmount
  • Fan: 2x 4cm 12V DC Quiet Cooling Fans
  • Power Consumption:
    • HDD Standby: 21.03W
    • In Operation: 38.01W (with 4 x 2TB HDD installed)
  • Power Supply: Input -100-240V, 50/60Hz; Output - 250W
  • Dimensions (WxDxH): 17.28 x 19.65 x 1.73 inch / 439.0 x 499.0 x 44.0 mm
  • Weight: 16.82 lbs / 7.63 kg
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  • Product images are for illustrative purposes only and the final product delivered may vary from the one shown above. 
  • In some cases, a product sold may arrive in different packaging than its original retail box. For bulk orders that are packaged together, product manuals or CDs may not always be available for each item.
  • At checkout, the shipping cost is a general estimate which is subject to change depending on size/weight/quantity of ordered goods.
  • Orders that contain end of life (EOL) products that are no longer in production may be replaced by a compatible product with the same FRU number offering same functionality.
  • Refurbished printers may not have full ink cartridges or laser toners.
  • Once an order is processed at our warehouse, it cannot be cancelled. A returned order will likely incur a restocking fee. See RMA page for details about restocking fees.
  • Please note if you are concerned about any of the above conditions or have any question at all, we highly recommend that you contact us on or call 425-615-6227 before placing an order.
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