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Product comparison · 2 nas & storage servers

QNAP HS-251-2G NAS Compact Intel® Celeron® vs QNAP TS-851 + 8X ST2000NC000

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  • 57specifications compared
  • 17differ
  • 40identical
  • 23known for one product only

Key differences

  • Storage drives installed
    • No
    • Yes
  • Total installed storage capacity
    • 0 TB
    • 16 TB
  • Number of storage drives installed
    • 0
    • 8
  • Number of storage drives supported
    • 2
    • 8
  • Installed storage drive type
    • No
    • HDD
  • RAID levels
    • 0, 1, JBOD
    • 0, 1, 5, 6, 10, JBOD
  • Internal memory
    • 2 GB
    • 1 GB
  • USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity
    • 2
    • 3

Side by side

Differences highlightedShow differences only
80 specifications
A

QNAP

HS-251-2G NAS Compact Intel® Celeron®

Model HS-251-2G

View product
B

QNAP

TS-851 + 8X ST2000NC000View product
Storage6 differ
Storage drives installedDiffersNoYes
Total installed storage capacityDiffers0 TB16 TB
Number of storage drives installedDiffers08
Number of storage drives supportedDiffers28
Installed storage drive typeDiffersNoHDD
RAID levelsDiffers0, 1, JBOD0, 1, 5, 6, 10, JBOD
Storage drive capacityKnown for one2 TB
Memory1 differ
Internal memoryDiffers2 GB1 GB
Maximum RAM supportedKnown for one8 GB
Memory slotsKnown for one2
Network1 differ
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
Wi-FiKnown for oneNo
Ports & interfaces1 differ
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers23
Design2 differ
Chassis typeDiffersCompactTower
Cooling typeDiffersPassiveActive
Built-in displayKnown for oneNo
Number of fansKnown for one2 fan(s)
Fan diameterKnown for one12 cm
Performance2 differ
Backup featuresKnown for oneCloud
BuzzerKnown for oneYes
Multilingual supportKnown for oneYes
Built-in optical driveKnown for oneNo
Card reader integratedKnown for oneNo
Management protocolsDiffersSNMPSNMP, Telnet
Security algorithmsDiffers256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLSFIPS 140-2, HTTPS, SSH, SSL/TLS
Softwareidentical
Windows operating systems supportedKnown for oneYes
Linux operating systems supportedKnown for oneYes
Mac operating systems supportedKnown for oneYes
Poweridentical
Power supply locationKnown for oneBuilt-in
Power supply unit (PSU) capacityKnown for one350 W
Number of power supply unitsKnown for one1
AC input frequencyKnown for one50 - 60 Hz
Fan voltageKnown for one12 V
Weight & dimensions3 differ
WidthDiffers302 mm298.2 mm
DepthDiffers220 mm235.4 mm
HeightDiffers41.3 mm185.2 mm
WeightKnown for one1.56 kg
Packaging content1 differ
External power adapterKnown for oneYes
Cables includedDiffersLAN (RJ-45)AC, LAN (RJ-45)
Other featuresidentical
Power managementKnown for oneYes

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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