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Product comparison · 2 nas & storage servers

Lenovo Pro px4-400d vs QNAP TS-251 NAS/storage server Tower Intel® Celeron®

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  • 45specifications compared
  • 27differ
  • 18identical
  • 42known for one product only

Key differences

  • Storage drives installed
    • Yes
    • No
  • Number of storage drives installed
    • 4
    • 0
  • Number of storage drives supported
    • 4
    • 2
  • Supported storage drive types
    • HDD
    • HDD & SSD
  • Storage drive size
    • 3.5"
    • 2.5/3.5"
  • RAID levels
    • 0, 1, 5, 10
    • 0, 1, JBOD
  • Processor family
    • Intel Atom®
    • Intel® Celeron®
  • Processor frequency
    • 2.13 GHz
    • 2.41 GHz

Side by side

Differences highlightedShow differences only
87 specifications
A

Lenovo

Pro px4-400dView product
B

QNAP

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

Model TS-251

View product
Storage6 differ
Storage drives installedDiffersYesNo
Number of storage drives installedDiffers40
Number of storage drives supportedDiffers42
Supported storage drive typesDiffersHDDHDD & SSD
Storage drive sizeDiffers3.5"2.5/3.5"
RAID levelsDiffers0, 1, 5, 100, 1, JBOD
Supported file systemsKnown for oneext3, ext4, FAT32, HFS+, NTFS
Total installed storage capacityKnown for one12 TB
Installed storage drive typeKnown for oneHDD
Storage drive capacityKnown for one3 TB
HDD speedKnown for one7200 RPM
Maximum supported storage capacityKnown for one16 TB
Processor2 differ
Processor familyDiffersIntel Atom®Intel® Celeron®
Processor frequencyDiffers2.13 GHz2.41 GHz
Processor modelKnown for oneD2701
L2 cacheKnown for one1 MB
Memory3 differ
Internal memoryDiffers2 GB1 GB
Internal memory typeDiffersDDR3DDR3L
Maximum RAM supportedDiffers2 GB8 GB
Flash memoryKnown for one512 MB
Memory slotsKnown for one1
Network2 differ
DHCP clientKnown for oneYes
DHCP serverKnown for oneYes
Jumbo frames supportDiffersNoYes
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
Wi-FiKnown for oneNo
Ports & interfaces2 differ
USB 2.0 ports quantityDiffers42
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers12
eSATA ports quantityKnown for one1
Design2 differ
Product colourDiffersBlackWhite
Fan diameterKnown for one7 cm
LED indicatorsKnown for oneYes
Built-in displayDiffersYesNo
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
Display typeKnown for oneLCD
Performance1 differ
Device classDiffersSmall & Medium BusinessHome & Home Office
BuzzerKnown for oneYes
Multilingual supportKnown for oneYes
Built-in optical driveKnown for oneNo
Card reader integratedKnown for oneNo
Management protocolsKnown for oneSNMP v2 & v3
Web-based managementKnown for oneYes
Access Control List (ACL)Known for oneYes
Reset buttonKnown for oneYes
Security algorithmsKnown for one256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Number of usersKnown for one75 user(s)
Noise levelKnown for one35 dB
Software1 differ
Operating system installedDiffersEMC LifeLineQNAP Turbo System
Operating system versionKnown for one4.1
Linux operating systems supportedKnown for oneYes
Power2 differ
Power supply unit (PSU) capacityKnown for one60 W
Redundant power supply (RPS) supportKnown for oneNo
Power consumption (typical)Differs55 W19.22 W
AC input voltageDiffers100-220 V100-240 V
Fan voltageKnown for one12 V
Power supply locationKnown for oneBuilt-in
AC input frequencyKnown for one50 - 60 Hz
Weight & dimensions4 differ
WidthDiffers184.2 mm102 mm
DepthDiffers235 mm225 mm
HeightDiffers215.9 mm168.5 mm
WeightDiffers6.94 kg1.28 kg
Package weightKnown for one2.32 kg
Packaging contentidentical
External power adapterKnown for oneYes
Operational conditions2 differ
Operating temperature (T-T)Differs10 - 40 °C0 - 40 °C
Operating relative humidity (H-H)Differs8 - 85%5 - 95%
Storage relative humidity (H-H)Known for one5 - 95%
Storage temperature (T-T)Known for one-40 - 60 °C
Other featuresidentical
Digital Living Network Alliance (DLNA) certifiedKnown for oneYes

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