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4-Bay NAS Devices

All NAS Devices

25 4-Bay NAS devices from QNAP, Synology, Buffalo and more. Most cost $430 to $16,339, and half cost less than $700.

Top brands: Synology (7)QNAP (7)

QNAPSpec score 8.4

4 Bays, Intel, 2.5GbE, Desktop

+Four drive bays for expanding storage capacity
+M.2 slots for fast cache or SSD storage
+2.5GbE network port for faster transfers
−Desktop form factor takes more space than rackmount
$619.00
as of 11/04/2026 11:05 PST - Details
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
TerraMasterSpec score 7.7

4 Bays, Intel, 4GB, 2.5GbE

+4 bays: the most bays of the 84 here
$429.99
as of 11/04/2026 09:07 PST - Details
UGREENSpec score 8.6

4 Bays, Intel, 8GB, 10GbE

+Four drive bays for a larger storage pool
+10GbE network port for fast transfers
+Intel processor with hardware transcoding support
−Sold diskless, drives must be bought separately
$619.99-15%List: $729.99
as of 11/04/2026 10:06 PST - Details
TerraMasterSpec score 8.8

4 Bays, Intel, 8GB, 5GbE

+4 bays: the most bays of the 84 here
+8GB memory: only 6 of 51 here have a higher memory
$599.99-8%List: $649.99
as of 11/04/2026 03:05 PST - Details
SynologySpec score 8.5

4 Bays, Intel, 64GB, 10GbE

+Intel Xeon 2.1GHz CPU for demanding multi-user workloads
+64GB memory for heavy concurrent use
+Two 10GbE LAN ports for fast network transfers
−Only 4 drive bays limits expansion
$12,099.00
as of 11/04/2026 03:05 PST - Details
QNAPSpec score 8.2

4 Bays, Intel, 8GB, 2.5GbE

+Four drive bays for expanding storage capacity
+M.2 slots for fast cache or SSD storage
+2.5GbE network port for faster transfers
−Desktop form factor takes more space than rackmount
$749.00
as of 11/04/2026 09:07 PST - Details
QNAPSpec score 8.2

4 Bays, Intel, 4GB, 2.5GbE

+Four drive bays for expanding storage capacity
+M.2 slots for fast cache or SSD storage
+2.5GbE network port for faster transfers
−Only 4GB RAM included
−Diskless, so drives must be bought separately
$529.99
as of 11/04/2026 11:05 PST - Details
TerraMasterSpec score 8.4

4 Bays, Intel, 32GB, 2.5GbE

+Four drive bays for a multi-drive storage setup
+32GB RAM for heavier multitasking than typical NAS units
+Two 2.5GbE ports for faster network transfers
−Ships diskless, so drives must be bought separately
No price recorded yet.
TerraMasterSpec score 8.8

4 Bays, Intel, 8GB, 5GbE

+Four drive bays for a multi-drive storage setup
+Two 5GbE ports for faster network transfers
+Three M.2 slots for solid-state storage or cache
−Ships diskless, so drives must be bought separately
$699.99
as of 11/04/2026 10:11 PST - Details
SynologySpec score 8.5

4 Bays, Intel, 64GB, 10GbE

+Intel Xeon 2.1GHz CPU for demanding multi-user workloads
+64GB memory for heavy concurrent use
+Two 10GbE LAN ports for fast network transfers
−Only 4 drive bays limits expansion
$16,339.00
as of 11/04/2026 06:09 PST - Details
SynologySpec score 8.5

4 Bays, Intel, 64GB, 10GbE

+Intel Xeon 2.1GHz CPU for demanding multi-user workloads
+64GB memory for heavy concurrent use
+Two 10GbE LAN ports for fast network transfers
−Only 4 drive bays limits expansion
$18,599.00
as of 11/04/2026 03:08 PST - Details
QNAPSpec score 8.2

4 Bays, Intel, 8GB, 2.5GbE

+Four drive bays for expanding storage capacity
+Short-depth 1U rackmount design saves rack space
+M.2 slots for fast cache or SSD storage
−Diskless, so drives must be bought separately
$849.00
as of 11/04/2026 09:07 PST - Details
QNAPSpec score 8.2

4 Bays, Intel, 8GB, 2.5GbE

+Four drive bays for expanding storage capacity
+Two M.2 slots for SSD cache or storage
+2.5GbE network port for faster transfers than gigabit
−Drives sold separately, not included
$1,299.00
as of 11/04/2026 03:05 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 7.8

4 Bays, Intel, 8GB, 5GbE

+Four drive bays for a multi-drive storage setup
+5GbE port for faster network transfers
+Compact palm-sized design
−Ships diskless, so drives must be bought separately
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.
MrrouteSpec score 8.4

4 Bays, Intel, 2.5GbE

+Four NVMe bays for high-speed solid state storage
+Intel i3-N305 processor for everyday server tasks
+Dual 2.5GbE LAN ports for faster network transfers
$319.90
as of 11/04/2026 02:11 PST - Details
QNAPSpec score 7.7

4 Bays, Intel, 4GB, 2.5GbE

+Four drive bays for a 4-bay storage array
+Intel Celeron J4125 processor
+Two 2.5GbE network ports
$1,431.73
as of 11/04/2026 10:10 PST - Details
QNAPSpec score 7.7

4 Bays, Intel, 8GB, 2.5GbE

+Four drive bays for expanding storage capacity
+Rackmount design fits server racks
+Dual 2.5GbE network ports for faster transfers
$1,099.00
as of 11/04/2026 03:05 PST - Details
YxkSpec score 8.7

4 Bays, Intel, 8GB, 2.5GbE

+4 bays: the most bays of the 84 here
+8GB memory: only 6 of 51 here have a higher memory
$359.99
as of 11/04/2026 10:06 PST - Details
UGREENSpec score 8.6

4 Bays, Intel, 8GB, 10GbE

+4 bays: the most bays of the 84 here
+10GbE: the highest fastest port of the 66 here
$799.99
as of 11/04/2026 10:06 PST - Details
SynologySpec score 8.5

4 Bays, Intel, 64GB, 10GbE

+4 bays: the most bays of the 84 here
+10GbE: the highest fastest port of the 66 here
$16,339.00
as of 11/04/2026 06:09 PST - Details
AsustorSpec score 8.3

4 Bays, Intel, 4GB, 5GbE

+4 bays: the most bays of the 84 here
+M.2 SSD slots: only 25 of 84 here have one
$681.99
as of 11/04/2026 11:05 PST - Details
AsustorSpec score 8.2

4 Bays, Intel, 4GB, 2.5GbE

+4 bays: the most bays of the 84 here
+M.2 SSD slots: only 25 of 84 here have one
$582.99
as of 11/04/2026 09:07 PST - Details

Compare specs

NAS deviceBaysProcessorMemoryFastest portDrivesSpec scorePrice
4Intel2.5GbE8.4$619.00
as of 11/04/2026 11:05 PST - Details
4Intel2GB2.5GbEDiskless8.2$659.72
as of 11/04/2026 09:07 PST - Details
4Intel4GB2.5GbEDiskless7.7$429.99
as of 11/04/2026 09:07 PST - Details
4Intel8GB10GbEDiskless8.6$619.99
as of 11/04/2026 10:06 PST - Details
4Intel8GB5GbEDiskless8.8$599.99
as of 11/04/2026 03:05 PST - Details
4Intel64GB10GbEDrives included8.5$12,099.00
as of 11/04/2026 03:05 PST - Details
4Intel8GB2.5GbE8.2$749.00
as of 11/04/2026 09:07 PST - Details
4Intel4GB2.5GbEDiskless8.2$529.99
as of 11/04/2026 11:05 PST - Details
4Intel32GB2.5GbEDiskless8.4No current price
4Intel8GB5GbEDiskless8.8$699.99
as of 11/04/2026 10:11 PST - Details

Before you buy

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