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Product comparison · 2 nas & storage servers

Lenovo EMC px4-400r + 4x ST2000NC000 vs QNAP HS-251-2G NAS Compact Intel® Celeron®

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  • 44specifications compared
  • 26differ
  • 18identical
  • 44known for one product only

Key differences

  • Storage drives installed
    • Yes
    • No
  • Total installed storage capacity
    • 8 TB
    • 0 TB
  • Number of storage drives installed
    • 4
    • 0
  • Number of storage drives supported
    • 4
    • 2
  • Installed storage drive type
    • HDD
    • No
  • Storage drive size
    • 3.5"
    • 2.5/3.5"
  • RAID levels
    • 0, 1, 5, 10
    • 0, 1, JBOD
  • Processor family
    • Intel Atom®
    • Intel® Celeron®

Side by side

Differences highlightedShow differences only
88 specifications
A

Lenovo

Lenovo EMC px4-400r + 4x ST2000NC000View product
B

QNAP

HS-251-2G NAS Compact Intel® Celeron®

Model HS-251-2G

View product
Storage8 differ
Storage drives installedDiffersYesNo
Total installed storage capacityDiffers8 TB0 TB
Number of storage drives installedDiffers40
Number of storage drives supportedDiffers42
Installed storage drive typeDiffersHDDNo
Supported storage drive typesHDD & SSDHDD & SSD
Storage drive interfaceDiffersSerial ATA IIISerial ATA II, Serial ATA III
Storage drive sizeDiffers3.5"2.5/3.5"
RAID supportYesYes
RAID levelsDiffers0, 1, 5, 100, 1, JBOD
Hot-swap drive baysYesYes
Supported file systemsKnown for oneext3, ext4, FAT32, HFS+, NTFS
Storage drive capacityKnown for one2 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 cores22
Processor modelKnown for oneD2701
L2 cacheKnown for one1 MB
Memory1 differ
Internal memory2 GB2 GB
Internal memory typeDiffersDDR3DDR3L
Flash memoryKnown for one512 MB
Network1 differ
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
DHCP clientKnown for oneYes
DHCP serverKnown for oneYes
Jumbo frames supportKnown for oneYes
iSCSI supportYesYes
Wake-on-LAN readyYesYes
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
Ethernet LAN (RJ-45) ports22
USB 2.0 ports quantityDiffers42
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers12
Fiber ports quantity00
HDMI ports quantity11
eSATA ports quantityKnown for one1
Design2 differ
Chassis typeDiffersRack (1U)Compact
Cooling typeKnown for onePassive
Product colourDiffersBlack, SilverBlack
LED indicatorsKnown for oneYes
Built-in displayKnown for oneNo
Cable lock slotKnown for oneYes
Cable lock slot typeKnown for oneKensington
Performance2 differ
TypeNASNAS
Device classDiffersSmall & Medium BusinessHome & Home Office
Backup functionYesYes
Backup featuresDiffersCloud, iSCSI LUNCloud
BuzzerKnown for oneYes
Multilingual supportYesYes
Built-in optical driveKnown for oneNo
Card reader integratedKnown for oneNo
Management protocolsKnown for oneSNMP
Web-based managementKnown for oneYes
Access Control List (ACL)Known for oneYes
On/off switchKnown 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 one42.5 dB
Software1 differ
Operating system installedKnown for oneQNAP Turbo System
Operating system versionKnown for one4.1
Windows operating systems supportedYesYes
Linux operating systems supportedYesYes
Mac operating systems supportedDiffersMac OS X 10.10 Yosemite, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksYes
Poweridentical
AC input voltage100-240 V100-240 V
Power consumption (max)Known for one73.72 W
AC input frequencyKnown for one50 - 60 Hz
Weight & dimensions4 differ
WidthDiffers520.7 mm302 mm
DepthDiffers435 mm220 mm
HeightDiffers43.9 mm41.3 mm
WeightDiffers10 kg1.56 kg
Package widthKnown for one870 mm
Package depthKnown for one599.9 mm
Package heightKnown for one224 mm
Package weightKnown for one17.2 kg
Packaging content1 differ
External power adapterKnown for oneYes
Cables includedDiffersAC, LAN (RJ-45)LAN (RJ-45)
Quick installation guideKnown for oneYes
Quick start guideKnown for oneYes
Operational conditions2 differ
Operating temperature (T-T)Differs10 - 40 °C0 - 40 °C
Operating relative humidity (H-H)Differs8 - 85%5 - 95%
Operating altitudeKnown for one0 - 2286 m
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
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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