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4-Bay NAS Devices

All NAS Devices

8 4-Bay NAS devices from QNAP, Synology, Buffalo and more. Most cost $300 to $2,169, and half cost less than $492.

Top brands: Synology (5)

All filtersFilters (2)×
Bays: 4  ×Memory: 2GB  ×Clear all
BrandSynology5Asustor2TerraMaster1
Bays48
ProcessorARM4Intel3
Memory4GB178GB172GB864GB41GB332GB2
Fastest port2.5GbE41GbE1
DrivesDiskless6Drives included1
BodyDesktop3Rackmount1
PriceUnder $3001Under $4001Under $5001Under $7001$500 & above2$700 & above1$1,500 & above1
Clear allShow 8 NAS Devices
Bays: 4  ×Memory: 2GB  ×8 resultsSort byRecommendedSpec scorePrice: low to highPrice: high to low
SynologySpec score 8.2

4 Bays, Intel, 2GB, 2.5GbE

+Four drive bays in a desktop form
+2.5GbE port for faster network transfers than gigabit
+M.2 slot for SSD cache or storage
−Only 2GB RAM, which is low for a NAS
−Drives sold separately, adding to setup
$659.72
as of 11/04/2026 09:07 PST - Details
SynologySpec score 7.7

4 Bays, ARM, 2GB, Diskless

+Four drive bays for a compact desktop NAS
+Realtek 4-core processor at 1.7 GHz
+Drives sold separately, so you choose capacity
−Only 2GB RAM, which is low for a NAS
−ARM processor rather than Intel or AMD
$492.13
as of 11/04/2026 09:07 PST - Details
SynologySpec score 7.6

4 Bays, ARM, 2GB, 1GbE

+4 drive bays for multi-drive storage
+Rackmount form factor fits server racks
+Drives included with 8TB HDD storage
−Only 2GB memory limits heavy workloads
−Only 1GbE LAN ports for slower network transfers
$2,169.00
as of 11/04/2026 03:05 PST - Details
AsustorSpec score 7.7

4 Bays, ARM, 2GB, 2.5GbE

+Four drive bays for multi-drive storage
+2.5GbE network port for faster transfers
+Media server support included
−Drives sold separately, must be purchased
−Only 2GB of RAM
No price recorded yet.
SynologySpec score 7.7

4 Bays, Intel, 2GB, Diskless

+Four drive bays for more storage capacity
+Intel CPU supports media server functions
+Media server functionality for streaming
−Diskless, so drives must be bought separately
−Only 2GB of DDR3L RAM
No price recorded yet.
AsustorSpec score 7.7

4 Bays, 2GB, 2.5GbE, Diskless

+4 bays: the most bays of the 84 here
−2GB memory: 40 of the 51 here have a higher memory
$356.99
as of 11/04/2026 10:11 PST - Details
SynologySpec score 8.2

4 Bays, Intel, 2GB, 2.5GbE

+Four drive bays for more storage capacity
+M.2 slots for NVMe cache or SSD storage
+2.5GbE network port for faster transfers than gigabit
−Only 2GB of RAM
No price recorded yet.
TerraMasterSpec score 7.7

4 Bays, ARM, 2GB, Diskless

+4 bays: the most bays of the 84 here
−2GB memory: 40 of the 51 here have a higher memory
$299.99
as of 11/04/2026 06:09 PST - Details

Compare specs

NAS deviceBaysProcessorMemoryFastest portDrivesSpec scorePrice
4Intel2GB2.5GbEDiskless8.2$659.72
as of 11/04/2026 09:07 PST - Details
4ARM2GBDiskless7.7$492.13
as of 11/04/2026 09:07 PST - Details
4ARM2GB1GbEDrives included7.6$2,169.00
as of 11/04/2026 03:05 PST - Details
4ARM2GB2.5GbEDiskless7.7No current price
4Intel2GBDiskless7.7No current price
42GB2.5GbEDiskless7.7$356.99
as of 11/04/2026 10:11 PST - Details
4Intel2GB2.5GbE8.2No current price
4ARM2GBDiskless7.7$299.99
as of 11/04/2026 06:09 PST - Details

Before you buy

Other Bays options

RAID and HBA Cards868KVM Switches623PDUs683Server Racks640Room Cooling and Sensors902Servers229UPS Battery Backups583Binoculars228Network Cables1,382Cameras2,556PC Cases264Chromebooks196

Popular filters

Rackmount NAS Devices145NAS Devices with Intel Processors143NAS Devices with Drives Included13910GbE NAS Devices132Desktop NAS Devices118Diskless NAS Devices108NAS Devices with AMD Processors872.5GbE NAS Devices78

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Spec scores, pros and cons, and prices are explained in the How it works section of the About page.