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4-Bay NAS Devices

All NAS Devices

84 4-Bay NAS devices from QNAP, Synology, Buffalo and more. Most cost $360 to $2,968, and half cost less than $789.

Top brands: Synology (27)QNAP (25)Asustor (7)UGREEN (7)Buffalo (6)

QNAPSpec score 8.3

4 Bays, ARM, 10GbE, Rackmount

+Four drive bays for expanded storage capacity
+Two 10GbE ports for high-speed network transfers
+Rackmount form factor fits server racks
−ARM processor rather than an Intel processor
$799.00
as of 11/04/2026 10:10 PST - Details
QNAPSpec score 8.3

4 Bays, ARM, 10GbE, Rackmount

+Four drive bays for a 4-bay storage array
+10GbE network ports for fast file transfers
+Redundant power supply for added power backup
−ARM processor rather than Intel
−Rackmount form needs a server rack
$1,300.60
as of 11/04/2026 09:07 PST - Details
Ubiquiti NetworksSpec score 8.3

4 Bays, 1GbE

+Four drive bays for a mid-size storage pool
+Two M.2 NVMe slots for SSD caching
+Supports 2.5-inch and 3.5-inch hard drives
−Standard 1GbE network port limits transfer speed
$574.99
as of 11/04/2026 03:05 PST - Details
AsustorSpec score 8.2

4 Bays, 4GB, 2.5GbE, Diskless

+Four drive bays with two M.2 SSD slots
+Dual 2.5GbE ports for faster transfers
+Media server support included
−Drives sold separately, must be purchased
−Only 4GB of RAM
$1,542.60
as of 11/04/2026 10:11 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
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, AMD, 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
−Diskless, so drives must be bought separately
$898.28
as of 11/04/2026 06:09 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, AMD, 4GB, 2.5GbE

+Four drive bays for expanding storage capacity
+Includes four 4TB Seagate IronWolf drives for 16TB
+Two 2.5GbE ports for faster network transfers
−Desktop form factor takes up desk space
$2,199.00
as of 11/04/2026 10:09 PST - Details
SynologySpec score 8.2

4 Bays, AMD, 4GB, 2.5GbE

+Four drive bays for expanding storage capacity
+Includes four 4TB WD Red Plus drives for 16TB
+Two 2.5GbE ports for faster network transfers
−Desktop form factor takes up desk space
$2,299.00
as of 11/04/2026 09:07 PST - Details
QNAPSpec score 8.0

4 Bays, ARM, 4GB, 10GbE

+Four drive bays for a 4-bay storage array
+10GbE network ports for fast file transfers
+Short-depth 1U design fits shallow racks
−ARM processor rather than Intel
−Rackmount form needs a server rack
$679.00
as of 11/04/2026 10:10 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 7.7

4 Bays, AMD, 4GB, 2.5GbE

+Four drive bays for expanding storage capacity
+Supports expansion up to nine bays
+2.5GbE network port for faster transfers than standard gigabit
−Drives are not included, so you must buy them separately
$769.99
as of 11/04/2026 09:07 PST - Details
SynologySpec score 7.7

4 Bays, 4GB, 2.5GbE, Drives included

+Four drive bays for expanding storage capacity
+Includes four 4TB Seagate IronWolf Pro drives for 16TB
+2.5GbE network port for faster transfers than standard gigabit
−Desktop form factor takes up desk space
$2,299.00
as of 11/04/2026 03:05 PST - Details
SynologySpec score 7.7

4 Bays, 4GB, 2.5GbE, Drives included

+Four drive bays for expanding storage capacity
+Includes four 8TB WD Red Plus drives for 32TB
+2.5GbE network port for faster transfers than standard gigabit
−Desktop form factor takes up desk space
$2,749.00
as of 11/04/2026 10:10 PST - Details
SynologySpec score 7.7

4 Bays, 1GbE, Diskless, Rackmount

+Four drive bays for a multi-drive storage pool
+Compact 1U rackmount design saves rack space
+Gigabit Ethernet LAN connection for network access
−Drives must be purchased separately
$1,597.51
as of 11/04/2026 10:10 PST - Details
AsustorSpec score 7.6

4 Bays, ARM, 1GB, 2.5GbE

+Four bays for expandable storage capacity
+2.5GbE LAN for faster network transfers
+Media support for streaming photos and videos
−Only 1GB of RAM limits multitasking
−Drives are not included with the unit
$463.91
as of 11/04/2026 11:05 PST - Details
QNAPSpec score 7.6

4 Bays, ARM, 1GB, 1GbE

+Four drive bays for home storage expansion
+Two 1GbE ports for network connectivity
+ARM processor designed for home NAS tasks
−Only 1GB of memory limits multitasking
$874.94
as of 11/04/2026 11:05 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
QNAP

4 Bays

+Four drive bays for expandable storage
+USB Type-C connection for direct computer attachment
+Includes 12 TB capacity with preconfigured RAID 5
−DAS connects directly to one device, not a network
$1,598.00
as of 11/04/2026 10:11 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.
QNAPSpec score 8.3

4 Bays, ARM, 10GbE, Rackmount

+Four drive bays for expanded storage capacity
+Two 10GbE ports for high-speed network transfers
+Redundant power supply for added reliability
−ARM processor rather than an Intel processor
No price recorded yet.
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.
QNAPSpec score 8.0

4 Bays, 4GB, 10GbE, Desktop

+Two 2.5GbE ports and two 10GbE SFP+ ports
+Four drive bays for expandable storage
+Quad-core processor for file serving tasks
−Only 4 GB of RAM limits multitasking
No current price. Check it at the store.
BuffaloSpec score 7.8

4 Bays, 2.5GbE, Drives included, Rackmount

+Four drive bays for a shared storage pool
+2.5GbE network port for faster-than-gigabit transfers
+Four 2TB drives included, 8TB total
−Rackmount form requires a server rack to mount
No price recorded yet.
QNAPSpec score 7.8

4 Bays, ARM, 2.5GbE, Diskless

+Four drive bays for a 4-bay storage array
+Quad-core processor for steady performance
+4GB built-in RAM
−Ships diskless, so drives must be bought separately
No current price. Check it at the store.
SynologySpec score 7.8

4 Bays, 32GB, 1GbE, Diskless

+Four drive bays for expanded storage
+Rackmount form factor for server racks
+32 GB of RAM
−Ships diskless, so drives must be bought separately
No price recorded yet.

Compare specs

NAS deviceBaysProcessorMemoryFastest portDrivesSpec scorePrice
4ARM10GbE8.3$799.00
as of 11/04/2026 10:10 PST - Details
4ARM10GbE8.3$1,300.60
as of 11/04/2026 09:07 PST - Details
41GbE8.3$574.99
as of 11/04/2026 03:05 PST - Details
44GB2.5GbEDiskless8.2$1,542.60
as of 11/04/2026 10:11 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
4Intel8GB2.5GbEDiskless8.2$849.00
as of 11/04/2026 09:07 PST - Details
4AMD8GB2.5GbEDiskless8.2$898.28
as of 11/04/2026 06:09 PST - Details
4Intel8GB2.5GbEDiskless8.2$1,299.00
as of 11/04/2026 03:05 PST - Details
4AMD4GB2.5GbEDrives included8.2$2,199.00
as of 11/04/2026 10:09 PST - Details

Before you buy

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