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Product comparison · 2 nas & storage servers

Lenovo EMC px4-400r Pro vs QNAP TS-421U + 4x 2TBWDRED

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  • 43specifications compared
  • 20differ
  • 23identical
  • 38known for one product only

Key differences

  • Total installed storage capacity
    • 12 TB
    • 8 TB
  • Storage drive capacity
    • 3 TB
    • 2 TB
  • Storage drive interface
    • Serial ATA III
    • Serial ATA, Serial ATA II
  • Storage drive size
    • 3.5"
    • 2.5/3.5"
  • RAID levels
    • 0, 1, 5, 10
    • 0, 1, 5, 6, 10, JBOD
  • Processor family
    • Intel Atom®
    • Marvell
  • Processor frequency
    • 2.13 GHz
    • 2 GHz
  • Internal memory
    • 2 GB
    • 1 GB

Side by side

Differences highlightedShow differences only
81 specifications
A

Lenovo

EMC px4-400r ProView product
B

QNAP

TS-421U + 4x 2TBWDREDView product
Storage5 differ
Total installed storage capacityDiffers12 TB8 TB
Storage drive capacityDiffers3 TB2 TB
Storage drive interfaceDiffersSerial ATA IIISerial ATA, Serial ATA II
Storage drive sizeDiffers3.5"2.5/3.5"
RAID levelsDiffers0, 1, 5, 100, 1, 5, 6, 10, JBOD
HDD speedKnown for one7200 RPM
Maximum supported storage capacityKnown for one16 TB
Processor2 differ
Processor familyDiffersIntel Atom®Marvell
Processor frequencyDiffers2.13 GHz2 GHz
Processor modelKnown for oneD2701
Processor coresKnown for one2
L2 cacheKnown for one1 MB
Memory1 differ
Internal memoryDiffers2 GB1 GB
Flash memoryKnown for one512 MB
Maximum RAM supportedKnown for one2 GB
Network1 differ
DHCP clientKnown for oneYes
DHCP serverKnown for oneYes
Supported network protocolsDiffersCIFS/SMB/Rally (Microsoft), NFS (Linux/UNIX), AFP Bonjour (Apple), FTP, SFTP, TFTP, HTTP, HTTPS, WebDAV, Windows DFS, SNMPCIFS/SMB, AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC
Ports & interfaces3 differ
USB 2.0 ports quantityDiffers42
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers12
eSATA ports quantityDiffers12
HDMI ports quantityKnown for one1
Designidentical
Cooling typeKnown for oneActive
Number of fansKnown for one2 fan(s)
Fan diameterKnown for one4 cm
LED indicatorsKnown for oneHDD, LAN, Status, USB
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
Performance1 differ
Device classKnown for oneSmall & Medium Business
Backup functionKnown for oneYes
BuzzerKnown for oneYes
Multilingual supportKnown for oneYes
Number of usersDiffers75 user(s)4096 user(s)
On/off switchKnown for oneYes
Reset buttonKnown for oneYes
Security algorithmsKnown for oneHTTPS, SSH, SSL/TLS
Noise levelKnown for one42.5 dB
Software2 differ
Operating system installedDiffersEMC LifeLineQNAP Turbo System
Windows operating systems supportedDiffersYesWindows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 P
Server operating systems supportedKnown for oneWindows Server 2003, Windows Server 2003 R2, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 R2, Windows Server 2008 x64, Windows Server 2012, Windows Server 2012 R2
Other operating systems supportedKnown for oneAndroid
Poweridentical
Power supply locationKnown for oneBuilt-in
Power supply unit (PSU) capacityKnown for one250 W
Number of power supply unitsKnown for one1
Fan voltageKnown for one12 V
Weight & dimensions3 differ
WidthDiffers435 mm439 mm
DepthDiffers520.7 mm483 mm
HeightDiffers43.9 mm44 mm
WeightKnown for one10 kg
Packaging contentidentical
External power adapterKnown for oneNo
Cables includedKnown for oneAC, LAN (RJ-45)
Quick installation guideKnown for oneYes
Operational conditions2 differ
Operating temperature (T-T)Differs10 - 40 °C0 - 40 °C
Operating relative humidity (H-H)Differs8 - 85%5 - 95%
Non-operating altitudeKnown for one0 - 12000 m
Operating altitudeKnown for one0 - 2250 m
Storage relative humidity (H-H)Known for one5 - 95%
Storage temperature (T-T)Known for one-40 - 60 °C

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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