Product comparison · 2 nas & storage servers

QNAP TS-221 4TB vs QNAP TS-421 12TB

Key differences

Differences highlightedShow differences only

Comparison of TS-221 4TB, TS-421 12TB
67 specifications	A QNAP TS-221 4TB View product	B QNAP TS-421 12TB View product
Storage6 differ
Total installed storage capacityDiffers	4 TB	12 TB
Number of storage drives installedDiffers	2	4
Number of storage drives supportedDiffers	2	4
Storage drive capacityDiffers	2 TB	3 TB
Maximum supported storage capacityDiffers	8 TB	16 TB
RAID levelsDiffers	0, 1, JBOD	0, 1, 5, 6, 10, JBOD
Networkidentical
Jumbo frames supportKnown for one	Unknown — not stated by the source	Yes
Ports & interfaces2 differ
Ethernet LAN (RJ-45) portsDiffers	1	2
USB 2.0 ports quantityDiffers	1	2
Design1 differ
LED indicatorsDiffers	HDD, LAN, Status, USB	eSATA, HDD, LAN, Status, USB
Display typeKnown for one	Unknown — not stated by the source	LCD
Performance1 differ
Number of usersDiffers	2048 user(s)	4096 user(s)
Noise levelKnown for one	25.3 dB	Unknown — not stated by the source
Noise level (idle)Known for one	11.9 dB	Unknown — not stated by the source
Power2 differ
Power supply unit (PSU) capacityDiffers	60 W	120 W
Power consumption (sleep)Differs	8 W	13 W
Weight & dimensions4 differ
WidthDiffers	102 mm	180 mm
DepthDiffers	216 mm	235 mm
HeightDiffers	150 mm	177 mm
WeightDiffers	1.74 kg	3 kg

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.