QNAP TS-451+-2G-US Intel Celeron 2.0GHz/ 2GB RAM/ 2GbE/ 4SATA3/ USB3.0/ 4-Bay Desktop NAS for SOHO & Home

Specifications

• Mfr Part Number: TS-451+-2G-US
• Hardware:
  • CPU: Intel Celeron Processor (2.0GHz, Burst Up to 2.42GHz, Quad Core)
  • Memory: 2GB (1x 2GB) DDR3L RAM (expandable up to 8GB)
  • Flash Memory: 512MB
  • HDD Drive: 4x 3.5" or 2.5" SATA3/SATA2 HDD or SSD; hot swappable trays
  • Expansion Unit:  Max. 1 (UX-800P, UX-500P)
  • LAN Port: 2x Gigabit RJ45 Ethernet Ports
  • LED Indicators: Power/Status, LAN, USB, HDD1-4
  • USB: 2x USB 3.0 Ports (1 front,1 rear), 2x USB 2.0 Ports (rear)
    
  • HDMI: 1
  • Buttons:  Power, Reset, USB Auto Copy
    
  • Alarm Buzzer: System Warning
    
  • IR Receiver: Yes (QNAP RM-IR002 remote control)
  • Kensington Security Slot: 1
    
  • Sound Level: Sound pressure (LpAm) - 16.9 dB(A)
    
  • Operating System: QTS 4.2 (embedded Linux)
• 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
• 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 and shared folder data encryption
  • AES 256-bit External Drive Encryption
  • Importable SSL certificates
  • Instant alert via E-mail, SMS, beep, and push notification service
  • 2-step verification
• Storage Management:
  • QNAP flexible Volume/LUN with thin provisioning and space reclaim
  • Disk volume types - RAID 0,1, 5, 5 + hot spare, 6, 10, JBOD, Single
  • Supports storage pools
  • Supports snapshots (4GB System RAM required)
    • Supports Volume/LUN snapshot (Max 256 snapshots)
    • Snapshot manager
    • Snapshot clone
    • Snapshot vault
    • Snapshot replica
    • Snapshot agent for Windows VSS and VMware
  • Online volume expansion
  • Online storage pool expansion
  • Online RAID capacity expansion and online RAID level migration
  • SMART data migration
  • Storage expansion via a QNAP UX-500P/UX-800P expansion unit
  • JBOD enclosure roaming
  • SSD read-only/read-write cache
  • Bad block scan and hard drive S.M.A.R.T.
  • Bad Bock Recovery
  • RAID Recovery
  • Bitmap Support
• File System:
  • Internal HDD: EXT4
  • External HDD: EXT4, EXT3, 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
  • 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 Device
  • Third party backup software support - Veeam backup & replication, Acronis True Image, Arcserve backup, emc retrospect, Symantec Backup Exec, etc.
    
• Form Factor: Tower
• Fan: 1x 12cm (12V DC)
  
• Power Supply: External Power Adapter, 90W, 100-240V
• Power Consumption:
  • HDD Standby: 15.78W
    
  • S3 Sleep: 0.57W
    
  • In Operation (typical): 33.88
    
• Dimensions (WxDxH): 7.09 x 9.25 x 6.97 inch / 180.0 x 235.0 x 177.0 mm
• Weight: 6.61 lbs / 3.0 kg