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Product comparison · 2 nas & storage servers

QNAP HS-251 NAS/storage server Desktop Intel® Celeron® vs QNAP TS-251 NAS/storage server Tower Intel® Celeron®

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  • 63specifications compared
  • 11differ
  • 52identical
  • 10known for one product only

Key differences

  • Chassis type
    • Desktop
    • Tower
  • Cooling type
    • Passive
    • Active
  • Product colour
    • Black
    • White
  • Management protocols
    • SNMP, Telnet
    • SNMP v2 & v3
  • Power consumption (typical)
    • 15.64 W
    • 19.22 W
  • Width
    • 302 mm
    • 102 mm
  • Depth
    • 220 mm
    • 225 mm
  • Height
    • 41.3 mm
    • 168.5 mm

Side by side

Differences highlightedShow differences only
73 specifications
A

QNAP

HS-251 NAS/storage server Desktop Intel® Celeron®

Model HS-251

View product
B

QNAP

TS-251 NAS/storage server Tower Intel® Celeron®

Model TS-251

View product
Storageidentical
Storage drives installedNoNo
Number of storage drives installed00
Number of storage drives supported22
Supported storage drive typesHDD & SSDHDD & SSD
Storage drive interfaceKnown for oneSerial ATA III
Storage drive size2.5/3.5"2.5/3.5"
RAID supportYesYes
RAID levels0, 1, JBOD0, 1, JBOD
Hot-swap drive baysYesYes
Supported file systemsext3, ext4, FAT32, HFS+, NTFSext3, ext4, FAT32, HFS+, NTFS
Total installed storage capacityKnown for one0 TB
Processoridentical
Processor familyIntel® Celeron®Intel® Celeron®
Processor frequency2.41 GHz2.41 GHz
Processor cores22
Memoryidentical
Internal memory1 GB1 GB
Internal memory typeDDR3LDDR3L
Maximum RAM supportedKnown for one8 GB
Flash memory512 MB512 MB
Network1 differ
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
DHCP clientYesYes
DHCP serverYesYes
Jumbo frames supportYesYes
iSCSI supportYesYes
Wake-on-LAN readyYesYes
Supported network protocolsDiffersCIFS/SMB,AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSCCIFS/SMB, AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC
Cabling technologyKnown for one10/100/1000Base-T(X)
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports22
USB 2.0 ports quantity22
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity22
Fiber ports quantity00
HDMI ports quantity11
Design3 differ
Chassis typeDiffersDesktopTower
Cooling typeDiffersPassiveActive
Product colourDiffersBlackWhite
Number of fansKnown for one1 fan(s)
Fan diameterKnown for one7 cm
LED indicatorsYesYes
Built-in displayNoNo
Cable lock slotYesYes
Cable lock slot typeKensingtonKensington
Performance1 differ
TypeNASNAS
Device classHome & Home OfficeHome & Home Office
Backup functionYesYes
BuzzerYesYes
Multilingual supportYesYes
Built-in optical driveNoNo
Card reader integratedNoNo
Management protocolsDiffersSNMP, TelnetSNMP v2 & v3
Web-based managementYesYes
Access Control List (ACL)YesYes
Reset buttonYesYes
Security algorithms256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Softwareidentical
Operating system installedQNAP Turbo SystemQNAP Turbo System
Operating system version4.14.1
Windows operating systems supportedYesYes
Mac operating systems supportedYesYes
Linux operating systems supportedKnown for oneYes
Server operating systems supportedKnown for oneWindows Server 2003
Power1 differ
Power supply unit (PSU) capacity60 W60 W
Redundant power supply (RPS) supportKnown for oneNo
Power consumption (typical)Differs15.64 W19.22 W
AC input voltage100-240 V100-240 V
Fan voltageKnown for one12 V
Weight & dimensions5 differ
WidthDiffers302 mm102 mm
DepthDiffers220 mm225 mm
HeightDiffers41.3 mm168.5 mm
WeightDiffers1.56 kg1.28 kg
Package weightDiffers2.62 kg2.32 kg
Packaging contentidentical
External power adapterYesYes
Operational conditionsidentical
Operating temperature (T-T)0 - 40 °C0 - 40 °C
Operating relative humidity (H-H)5 - 95%5 - 95%
Other featuresidentical
Digital Living Network Alliance (DLNA) certifiedYesYes

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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