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Product comparison · 2 nas & storage servers

QNAP TS-121 1x3TB vs QNAP TS-421U 2x2TB

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  • 59specifications compared
  • 21differ
  • 38identical
  • 6known for one product only

Key differences

  • Total installed storage capacity
    • 3 TB
    • 4 TB
  • Number of storage drives installed
    • 1
    • 2
  • Number of storage drives supported
    • 1
    • 4
  • Storage drive capacity
    • 3 TB
    • 2 TB
  • Maximum supported storage capacity
    • 4 TB
    • 12 TB
  • RAID support
    • No
    • Yes
  • Ethernet LAN (RJ-45) ports
    • 1
    • 2
  • USB 2.0 ports quantity
    • 1
    • 2

Side by side

Differences highlightedShow differences only
65 specifications
A

QNAP

TS-121 1x3TBView product
B

QNAP

TS-421U 2x2TBView product
Storage6 differ
Total installed storage capacityDiffers3 TB4 TB
Number of storage drives installedDiffers12
Number of storage drives supportedDiffers14
Storage drive capacityDiffers3 TB2 TB
Storage drive interfaceSerial ATA, Serial ATA IISerial ATA, Serial ATA II
Storage drive size2.5/3.5"2.5/3.5"
Maximum supported storage capacityDiffers4 TB12 TB
RAID supportDiffersNoYes
RAID levelsKnown for one0, 1, 5, 5+0, 5+1, 6, 10, JBOD
Supported file systemsext3, ext4, FAT32, HFS+, NTFSext3, ext4, FAT32, HFS+, NTFS
Processoridentical
Processor familyMarvellMarvell
Processor frequency2 GHz2 GHz
Number of processors installed11
Memoryidentical
Internal memory1 GB1 GB
Internal memory typeDDR3DDR3
Flash memory16 MB16 MB
Networkidentical
Ethernet LANYesYes
Ethernet LAN data rates10,100,1000 Mbit/s10,100,1000 Mbit/s
Wi-FiNoNo
DHCP serverYesYes
Jumbo frames supportYesYes
iSCSI supportYesYes
Wake-on-LAN readyKnown for oneYes
Compliance industry standards802.3, 802.3u, 802.3ab802.3, 802.3u, 802.3ab
Cabling technology10/100/1000Base-T(X)10/100/1000Base-T(X)
Supported network protocolsTCP/ IPTCP/ IP
Ports & interfaces3 differ
Ethernet LAN (RJ-45) portsDiffers12
USB 2.0 ports quantityDiffers12
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity22
Fiber ports quantity00
eSATA ports quantityDiffers12
eSATAYesYes
Design2 differ
Chassis typeDiffersTowerRack (1U)
Product colourBlackBlack
Number of fansDiffers1 fan(s)2 fan(s)
LED indicatorsHDD, LAN, Status, USBHDD, LAN, Status, USB
Cable lock slotYesYes
Cable lock slot typeKensingtonKensington
Performance2 differ
BuzzerYesYes
Multilingual supportKnown for oneYes
Number of usersDiffers2048 user(s)4096 user(s)
Management protocolsSNMP (v2/v3)SNMP (v2/v3)
Access Control List (ACL)YesYes
On/off switchYesYes
Reset buttonYesYes
Security algorithmsDiffersSSL/TLSHTTPS, SSL/TLS
Web-based managementKnown for oneYes
Softwareidentical
Operating system installedLinuxLinux
Windows operating systems supportedWindows 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 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, WinWindows 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 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Win
Linux operating systems supportedYesYes
Mac operating systems supportedYesYes
Server operating systems supportedWindows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012Windows Server 2003, Windows Server 2008, Windows Server 2008 R2, Windows Server 2012
Power2 differ
Power consumption (typical)Differs7 W33 W
Power consumption (sleep)Differs4 W12 W
AC input voltage100-240 V100-240 V
AC input frequencyKnown for one50 - 60 Hz
Output powerKnown for one250 W
Weight & dimensions5 differ
WidthDiffers67 mm483 mm
DepthDiffers216 mm439 mm
HeightDiffers150.2 mm44 mm
WeightDiffers1.06 kg6.7 kg
Package weightDiffers1.86 kg11.1 kg
Packaging contentidentical
External power adapterYesYes
Operational conditions1 differ
Operating temperature (T-T)0 - 40 °C0 - 40 °C
Operating relative humidity (H-H)Differs0 - 95%0 - 90%

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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