Product comparison · 2 nas & storage servers

EMC HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2 vs QNAP TS-251+ NAS Tower Intel® Celeron® DDR3L

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  • 28specifications compared
  • 19differ
  • 9identical
  • 145known for one product only

Key differences

  • Total installed storage capacity
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:354.8 TB
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:4 TB
  • Number of storage drives supported
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:60
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:2
  • Installed storage drive type
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:HDD+SSD
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:HDD
  • Processor family
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:Intel® Xeon® E5 V2 Family
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:Intel® Celeron®
  • Processor frequency
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:2.4 GHz
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:2 GHz
  • Internal memory type
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:DDR3
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:DDR3L
  • Maximum RAM supported
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:48 GB
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:8 GB
  • USB port
    • HD400 NAS Rack (4U) Intel® Xeon® E5 V2 Family E5-2407V2:No
    • TS-251+ NAS Tower Intel® Celeron® DDR3L:Yes

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Differences highlightedShow differences only (off)
Comparison of HD400, TS-251+
173 specifications
Storage3 differ
Storage drives installedYesYes
Total installed storage capacityDiffers354.8 TB4 TB
Number of storage drives supportedDiffers602
Installed storage drive typeDiffersHDD+SSDHDD
Supported storage drive typesHDD & SSDHDD & SSD
Storage drive interfaceKnown for oneSerial ATA IIIUnknown — not stated by the source
Storage drive sizeKnown for one3.5"Unknown — not stated by the source
Number of storage drives installedKnown for oneUnknown — not stated by the source2
Storage drive capacityKnown for oneUnknown — not stated by the source2 TB
Supported storage drive interfacesKnown for oneUnknown — not stated by the sourceSerial ATA II, Serial ATA III
Storage drive sizes supportedKnown for oneUnknown — not stated by the source2.5,3.5"
RAID supportKnown for oneUnknown — not stated by the sourceYes
RAID levelsKnown for oneUnknown — not stated by the source0, 1, JBOD
Online RAID migrationKnown for oneUnknown — not stated by the sourceYes
Online RAID expansionKnown for oneUnknown — not stated by the sourceYes
Hot-swap drive baysKnown for oneUnknown — not stated by the sourceYes
Supported file systemsKnown for oneUnknown — not stated by the sourceFAT32, HFS+, NTFS, exFAT, ext3, ext4
Bad block scanKnown for oneUnknown — not stated by the sourceYes
Processor2 differ
Processor manufacturerKnown for oneIntelUnknown — not stated by the source
Processor familyDiffersIntel® Xeon® E5 V2 FamilyIntel® Celeron®
Processor modelKnown for oneE5-2407V2Unknown — not stated by the source
Processor frequencyDiffers2.4 GHz2 GHz
Processor boost frequencyKnown for one2.4 GHzUnknown — not stated by the source
Processor cores44
Processor threadsKnown for one4Unknown — not stated by the source
Processor cacheKnown for one10 MBUnknown — not stated by the source
Bus typeKnown for oneQPIUnknown — not stated by the source
CPU configuration (max)Known for one2Unknown — not stated by the source
ECC supported by processorKnown for oneYesUnknown — not stated by the source
FSB ParityKnown for oneNoUnknown — not stated by the source
PCI Express slots versionKnown for one3.0Unknown — not stated by the source
Physical Address Extension (PAE)Known for one46 bitUnknown — not stated by the source
Processor cache typeKnown for oneSmart CacheUnknown — not stated by the source
Processor codeKnown for oneSR1AKUnknown — not stated by the source
Processor codenameKnown for oneIvy Bridge ENUnknown — not stated by the source
Processor lithographyKnown for one22 nmUnknown — not stated by the source
Processor operating modesKnown for one64-bitUnknown — not stated by the source
Processor package sizeKnown for one45 x 42.5 mmUnknown — not stated by the source
Processor socketKnown for oneLGA 1356 (Socket B2)Unknown — not stated by the source
ScalabilityKnown for one2SUnknown — not stated by the source
SteppingKnown for oneS1Unknown — not stated by the source
System bus rateKnown for one6.4 GT/sUnknown — not stated by the source
TcaseKnown for one76 °CUnknown — not stated by the source
Thermal Design Power (TDP)Known for one80 WUnknown — not stated by the source
Maximum internal memory supported by processorKnown for one384 GBUnknown — not stated by the source
Memory bandwidth supported by processor (max)Known for one32 GB/sUnknown — not stated by the source
Conflict-Free processorKnown for oneNoUnknown — not stated by the source
Memory2 differ
Internal memoryKnown for one24 GBUnknown — not stated by the source
Internal memory typeDiffersDDR3DDR3L
Maximum RAM supportedDiffers48 GB8 GB
Memory clock speedKnown for oneUnknown — not stated by the source1600 MHz
Memory form factorKnown for oneUnknown — not stated by the sourceSO-DIMM
Memory slotsKnown for oneUnknown — not stated by the source2
Flash memoryKnown for oneUnknown — not stated by the source512 MB
Network1 differ
Ethernet LANYesYes
Wi-FiNoNo
Supported network protocolsDiffersNFSv3, NFSv4, NFS, SMB1 (CIFS), SMB2, SMB3 Multichannel, HTTP, FTP, NDMP, SNMP, LDAP, HDFS, ADSCIFS/SMB, AFP v3.3, NFS v3, FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC
Ethernet LAN data ratesKnown for oneUnknown — not stated by the source10,100,1000 Mbit/s
DHCP clientKnown for oneUnknown — not stated by the sourceYes
DHCP serverKnown for oneUnknown — not stated by the sourceYes
Jumbo frames supportKnown for oneUnknown — not stated by the sourceYes
iSCSI supportKnown for oneUnknown — not stated by the sourceYes
Wake-on-LAN readyKnown for oneUnknown — not stated by the sourceYes
Dynamic DNS (DDNS)Known for oneUnknown — not stated by the sourceYes
Link aggregationKnown for oneUnknown — not stated by the sourceYes
Ports & interfaces3 differ
USB portDiffersNoYes
USB 2.0 ports quantityDiffers02
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantityDiffers02
Ethernet LAN (RJ-45) portsKnown for oneUnknown — not stated by the source2
Fiber ports quantityKnown for oneUnknown — not stated by the source0
HDMI ports quantityKnown for oneUnknown — not stated by the source1
Design1 differ
Chassis typeDiffersRack (4U)Tower
Cooling typeActiveActive
Product colourBlackBlack
Number of fansKnown for oneUnknown — not stated by the source1 fan(s)
Fan diameterKnown for oneUnknown — not stated by the source7 cm
LED indicatorsKnown for oneUnknown — not stated by the sourceHDD, LAN, Power, Status, USB
Cable lock slotKnown for oneUnknown — not stated by the sourceYes
Cable lock slot typeKnown for oneUnknown — not stated by the sourceKensington
Performanceidentical
TypeNASNAS
Device classKnown for oneUnknown — not stated by the sourceHome & Home Office
Backup functionKnown for oneUnknown — not stated by the sourceYes
Backup featuresKnown for oneUnknown — not stated by the sourceCloud, USB drive, iSCSI LUN
BuzzerKnown for oneUnknown — not stated by the sourceYes
Noise levelKnown for oneUnknown — not stated by the source15.4 dB
SnapshotKnown for oneUnknown — not stated by the sourceYes
Management protocolsKnown for oneUnknown — not stated by the sourceSNMP
Share folder access right managementKnown for oneUnknown — not stated by the sourceYes
Web-based managementKnown for oneUnknown — not stated by the sourceYes
Backup buttonKnown for oneUnknown — not stated by the sourceYes
Browser supportedKnown for oneUnknown — not stated by the sourceApple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox
Built-in FTP serverKnown for oneUnknown — not stated by the sourceYes
Built-in iTunes serverKnown for oneUnknown — not stated by the sourceYes
On/off switchKnown for oneUnknown — not stated by the sourceYes
Remotely operatedKnown for oneUnknown — not stated by the sourceYes
Reset buttonKnown for oneUnknown — not stated by the sourceYes
S.M.A.R.T. supportKnown for oneUnknown — not stated by the sourceYes
Security algorithmsKnown for oneUnknown — not stated by the source256-bit AES, FIPS 140-2, HTTPS, SSH
Share folderKnown for oneUnknown — not stated by the source512
System logKnown for oneUnknown — not stated by the sourceYes
Universal Plug and Play (UPnP)Known for oneUnknown — not stated by the sourceYes
Power3 differ
Power supply locationDiffersBuilt-inExternal
Power supply unit (PSU) capacityDiffers1450 W60 W
Number of power supply unitsKnown for one2Unknown — not stated by the source
Redundant power supply (RPS) supportKnown for oneYesUnknown — not stated by the source
AC input voltageDiffers220 V100 - 240 V
Power consumption (typical)Known for oneUnknown — not stated by the source18.09 W
Power consumption (sleep)Known for oneUnknown — not stated by the source0.57 W
Power consumption (HDD standby)Known for oneUnknown — not stated by the source10.56 W
Fan voltageKnown for oneUnknown — not stated by the source12 V
Weight & dimensions3 differ
WidthDiffers480 mm102 mm
DepthDiffers889 mm219 mm
HeightDiffers177 mm169 mm
WeightKnown for oneUnknown — not stated by the source1.28 kg
Package weightKnown for oneUnknown — not stated by the source2.32 kg
Processor special featuresidentical
Embedded options availableKnown for oneNoUnknown — not stated by the source
Enhanced Intel SpeedStep TechnologyKnown for oneYesUnknown — not stated by the source
Execute Disable BitKnown for oneYesUnknown — not stated by the source
Idle StatesKnown for oneYesUnknown — not stated by the source
Intel 64Known for oneYesUnknown — not stated by the source
Intel Clear Video TechnologyKnown for oneNoUnknown — not stated by the source
Intel Demand Based SwitchingKnown for oneYesUnknown — not stated by the source
Intel Dual Display Capable TechnologyKnown for oneNoUnknown — not stated by the source
Intel Enhanced Halt StateKnown for oneYesUnknown — not stated by the source
Intel FDI TechnologyKnown for oneNoUnknown — not stated by the source
Intel Fast Memory AccessKnown for oneNoUnknown — not stated by the source
Intel Flex Memory AccessKnown for oneNoUnknown — not stated by the source
Intel Identity Protection Technology versionKnown for one0.00Unknown — not stated by the source
Intel Rapid Storage TechnologyKnown for oneNoUnknown — not stated by the source
Intel Secure Key Technology versionKnown for one1.00Unknown — not stated by the source
Intel TSX-NIKnown for oneNoUnknown — not stated by the source
Intel TSX-NI versionKnown for one0.00Unknown — not stated by the source
Intel Trusted Execution TechnologyKnown for oneYesUnknown — not stated by the source
Intel VT-x with Extended Page Tables (EPT)Known for oneYesUnknown — not stated by the source
Intel Virtualization Technology (VT-x)Known for oneYesUnknown — not stated by the source
Intel Virtualization Technology for Directed I/O (VT-d)Known for oneYesUnknown — not stated by the source
Intel® AES New Instructions (Intel® AES-NI)Known for oneYesUnknown — not stated by the source
Intel® Anti-Theft Technology (Intel® AT)Known for oneNoUnknown — not stated by the source
Intel® Clear Video HD Technology (Intel® CVT HD)Known for oneNoUnknown — not stated by the source
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)Known for oneNoUnknown — not stated by the source
Intel® Hyper Threading Technology (Intel® HT Technology)Known for oneNoUnknown — not stated by the source
Intel® Identity Protection Technology (Intel® IPT)Known for oneNoUnknown — not stated by the source
Intel® InTru™ 3D TechnologyKnown for oneNoUnknown — not stated by the source
Intel® Insider™Known for oneNoUnknown — not stated by the source
Intel® My WiFi Technology (Intel® MWT)Known for oneNoUnknown — not stated by the source
Intel® OS GuardKnown for oneYesUnknown — not stated by the source
Intel® Quick Sync Video TechnologyKnown for oneNoUnknown — not stated by the source
Intel® Secure KeyKnown for oneYesUnknown — not stated by the source
Intel® Smart CacheKnown for oneYesUnknown — not stated by the source
Intel® Turbo Boost TechnologyKnown for oneNoUnknown — not stated by the source
Intel® Wireless Display (Intel® WiDi)Known for oneNoUnknown — not stated by the source
Maximum number of PCI Express lanesKnown for one24Unknown — not stated by the source
Number of QPI linksKnown for one1Unknown — not stated by the source
Physical Address Extension (PAE)Known for oneYesUnknown — not stated by the source
Thermal Monitoring TechnologiesKnown for oneYesUnknown — not stated by the source
Memory channels supported by processorKnown for oneTripleUnknown — not stated by the source
Memory types supported by processorKnown for oneDDR3-SDRAMUnknown — not stated by the source
Operational conditions1 differ
Operating temperature (T-T)Differs10 - 35 °C0 - 40 °C
Operating relative humidity (H-H)5 - 95%5 - 95%
Other featuresidentical
Processor ARK IDKnown for one75782Unknown — not stated by the source
Number of simultaneous usersKnown for oneUnknown — not stated by the source4096 user(s)
Softwareidentical
Operating system installedKnown for oneUnknown — not stated by the sourceQNAP Turbo System
Operating system versionKnown for oneUnknown — not stated by the source4.3
Windows operating systems supportedKnown for oneUnknown — not stated by the sourceWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home
Linux operating systems supportedKnown for oneUnknown — not stated by the sourceYes
Mac compatibilityKnown for oneUnknown — not stated by the sourceYes
Mac operating systems supportedKnown for oneUnknown — not stated by the sourceMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Server operating systems supportedKnown for oneUnknown — not stated by the sourceWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016
Packaging contentidentical
External power adapterKnown for oneUnknown — not stated by the sourceYes
Cables includedKnown for oneUnknown — not stated by the sourceAC, LAN (RJ-45)
Quick installation guideKnown for oneUnknown — not stated by the sourceYes
Number of screwsKnown for oneUnknown — not stated by the source14
Remote control includedKnown for oneUnknown — not stated by the sourceYes

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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