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Product comparison · 2 nas & storage servers

QNAP TS-420 + 4x 1TBWDRED vs QNAP TS-421U + 4x 4TBWDRED

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  • 66specifications compared
  • 16differ
  • 50identical
  • 5known for one product only

Key differences

The QNAP TS-421U + 4x 4TBWDRED has 12 TB more total installed storage capacity than the QNAP TS-420 + 4x 1TBWDRED (16 TB vs 4 TB). The QNAP TS-421U + 4x 4TBWDRED has 3 TB more storage drive capacity than the QNAP TS-420 + 4x 1TBWDRED (4 TB vs 1 TB). The QNAP TS-421U + 4x 4TBWDRED has 0.4 GHz more processor frequency than the QNAP TS-420 + 4x 1TBWDRED (2 GHz vs 1.6 GHz). Only the QNAP TS-420 + 4x 1TBWDRED has external power adapter. Supported storage drive types: HDD & SSD on the QNAP TS-420 + 4x 1TBWDRED, HDD on the QNAP TS-421U + 4x 4TBWDRED.

  • Total installed storage capacity
    • 4 TB
    • 16 TB
  • Supported storage drive types
    • HDD & SSD
    • HDD
  • Storage drive capacity
    • 1 TB
    • 4 TB
  • Processor frequency
    • 1.6 GHz
    • 2 GHz
  • Internal memory
    • 0.512 GB
    • 1 GB
  • Chassis type
    • Tower
    • Rack (1U)
  • Number of fans
    • 1 fan(s)
    • 2 fan(s)
  • Fan diameter
    • 9 cm
    • 4 cm

Side by side

Differences highlightedShow differences only
71 specifications
A

QNAP

TS-420 + 4x 1TBWDREDView product
B

QNAP

TS-421U + 4x 4TBWDREDView product
Storage3 differ
Total installed storage capacityDiffers4 TB16 TB
Supported storage drive typesDiffersHDD & SSDHDD
Storage drive capacityDiffers1 TB4 TB
Maximum supported storage capacityKnown for one16 TB
Processor1 differ
Processor frequencyDiffers1.6 GHz2 GHz
Memory1 differ
Internal memoryDiffers0.512 GB1 GB
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
Design3 differ
Chassis typeDiffersTowerRack (1U)
Number of fansDiffers1 fan(s)2 fan(s)
Fan diameterDiffers9 cm4 cm
Performance1 differ
Device classDiffersHome & Home OfficeSmall & Medium Business
Security algorithmsKnown for oneHTTPS, SSH, SSL/TLS
Softwareidentical
Operating system versionKnown for one4.0
Power2 differ
Power supply locationDiffersExternalBuilt-in
Power supply unit (PSU) capacityDiffers36 W250 W
Weight & dimensions3 differ
WidthDiffers180 mm439 mm
DepthDiffers235 mm483 mm
HeightDiffers177 mm44 mm
Packaging content1 differ
External power adapterDiffersYesNo
Quick installation guideKnown for oneYes
Other featuresidentical
Compliance certificatesKnown for oneRoHS

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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