All categories
Phones & WearablesView all 31

Departments

Phones & WearablesComputers & TabletsComponents & StorageNetworkingPrinting & OfficePower & ChargingTV, Audio & VideoGaming, Toys & RobotsKitchen AppliancesHome AppliancesPersonal Care & HealthSmart Home & SecurityCar & MobilityTools & GardenCameras & Photo

Shopping country

Browse

All categoriesCompare products

Product comparison · 2 nas & storage servers

QNAP EXT1-TS-251-4G NAS/storage server Tower Intel® Celeron® vs QNAP HS-251-2G NAS Compact Intel® Celeron®

Add a product
  • 55specifications compared
  • 15differ
  • 40identical
  • 36known for one product only

Key differences

  • Total installed storage capacity
    • 8 TB
    • 0 TB
  • Internal memory
    • 4 GB
    • 2 GB
  • Chassis type
    • Tower
    • Compact
  • Cooling type
    • Active
    • Passive
  • Product colour
    • White
    • Black
  • LED indicators
    • HDD, LAN, Status, USB
    • Yes
  • Management protocols
    • CIFS/SMB, AFP, FTP
    • SNMP
  • Width
    • 102 mm
    • 302 mm

Side by side

Differences highlightedShow differences only
91 specifications
A

QNAP

EXT1-TS-251-4G NAS/storage server Tower Intel® Celeron®

Model EXT1-TS-251-4G

View product
B

QNAP

HS-251-2G NAS Compact Intel® Celeron®

Model HS-251-2G

View product
Storage2 differ
Storage drives installedNoNo
Total installed storage capacityDiffers8 TB0 TB
Number of storage drives installed00
Number of storage drives supported22
Supported storage drive typesHDD & SSDHDD & SSD
Storage drive capacityKnown for one4 TB
Storage drive interfaceDiffersSerial ATA, Serial ATA II, Serial ATA IIISerial ATA II, Serial ATA III
Storage drive size2.5/3.5"2.5/3.5"
Maximum supported storage capacityKnown for one8 TB
RAID supportYesYes
RAID levels0, 1, JBOD0, 1, JBOD
Hot-swap drive baysYesYes
Installed storage drive typeKnown for oneNo
Supported file systemsKnown for oneext3, ext4, FAT32, HFS+, NTFS
Processoridentical
Processor familyIntel® Celeron®Intel® Celeron®
Processor frequency2.41 GHz2.41 GHz
Processor cores22
Memory1 differ
Internal memoryDiffers4 GB2 GB
Internal memory typeDDR3LDDR3L
Memory clock speedKnown for one1333 MHz
Flash memory512 MB512 MB
Networkidentical
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
Wi-FiKnown for oneNo
DHCP clientKnown for oneYes
DHCP serverKnown for oneYes
Jumbo frames supportKnown for oneYes
iSCSI supportKnown for oneYes
Wake-on-LAN readyKnown for oneYes
Supported network protocolsKnown for oneCIFS/SMB,AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSC
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports22
USB 2.0 ports quantity22
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity22
Fiber ports quantity00
HDMI ports quantity11
Design4 differ
Chassis typeDiffersTowerCompact
Cooling typeDiffersActivePassive
Product colourDiffersWhiteBlack
Number of fansKnown for one1 fan(s)
Fan diameterKnown for one7 cm
LED indicatorsDiffersHDD, LAN, Status, USBYes
Cable lock slotYesYes
Cable lock slot typeKensingtonKensington
Built-in displayKnown for oneNo
Performance2 differ
TypeNASNAS
Device classHome & Home OfficeHome & Home Office
Backup functionYesYes
Backup featuresCloudCloud
BuzzerYesYes
Multilingual supportYesYes
Management protocolsDiffersCIFS/SMB, AFP, FTPSNMP
Share folder access right managementKnown for oneYes
Web-based managementYesYes
Access Control List (ACL)YesYes
Browser supportedKnown for oneChrome, Firefox, IE, Safari
Built-in FTP serverKnown for oneYes
Built-in iTunes serverKnown for oneYes
On/off switchYesYes
Reset buttonYesYes
S.M.A.R.T. supportKnown for oneYes
Security algorithmsDiffersHTTPS, SSH256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLS
Share folderKnown for oneCIFS/SMB
Built-in optical driveKnown for oneNo
Card reader integratedKnown for oneNo
Software1 differ
Operating system installedQNAP Turbo SystemQNAP Turbo System
Operating system version4.14.1
Bundled softwareKnown for oneDropbox, Google Cloud Storage Sync, McAfee, WordPress, HappyGet II
Windows operating systems supportedDiffersWindows XP Home, Windows XP Home x64, Windows XP Professional, Windows XP Professional x64Yes
Linux operating systems supportedYesYes
Mac operating systems supportedYesYes
Server operating systems supportedKnown for oneWindows Server 2003, Windows Server 2003 R2, Windows Server 2003 x64
Pre-installed softwareKnown for oneChrome, IE 10+, Firefox, Safari
Poweridentical
Power supply locationKnown for oneExternal
Power supply unit (PSU) capacityKnown for one60 W
Number of power supply unitsKnown for one1
Power consumption (typical)Known for one19.22 W
Power consumption (sleep)Known for one0.47 W
AC input voltage100-240 V100-240 V
Fan voltageKnown for one12 V
Weight & dimensions4 differ
WidthDiffers102 mm302 mm
DepthDiffers225 mm220 mm
HeightDiffers168.5 mm41.3 mm
WeightDiffers1.28 kg1.56 kg
Packaging content1 differ
External power adapterYesYes
Cables includedDiffersAC, LAN (RJ-45)LAN (RJ-45)
Quick start guideKnown for oneYes
Quick installation guideKnown for oneYes
Operational conditionsidentical
Operating temperature (T-T)0 - 40 °C0 - 40 °C
Operating relative humidity (H-H)5 - 95%5 - 95%
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.

More nas & storage servers comparisons

All nas & storage servers comparisons