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ASUSTOR LOCKERSTOR 4RS (AS6504RS) / LOCKERSTOR 4RD (AS6504RD)

Ranked #7 of 35 in Best 4-Bay NAS (2026). Here is every spec we scored, where it came from, and how it compares.

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#7

ASUSTOR LOCKERSTOR 4RS (AS6504RS) / LOCKERSTOR 4RD (AS6504RD)

Best for: 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU

4.7/10

What we like

  • Official table lists a 2.5GbE onboard Ethernet port
  • Official installed system memory is 8 GB
  • Official maximum memory capacity is 128 GB
  • Official table lists 4 onboard Ethernet ports

Watch out for

  • Official form is rackmount, so it needs a rack, rails and a plan for moving the unit safely

Score breakdown

Installed system memory 28%
Fastest official onboard Ethernet 26%
Official CPU core count 24%
Official onboard Ethernet ports 22%
Installed system memory8 GB
Fastest official onboard Ethernet2.5 Gbps
Official CPU core count4
Official onboard Ethernet ports4
Drive bays (official table)4 official bays — 4 x SATA3 6Gb/s 3.5"/2.5" HDD/SSD
M.2 slots (official table)0
Installed system memory (official table)8GB SO-DIMM DDR4
Maximum memory capacity (official table)8GB SO-DIMM DDR4 (Expandable. Max 128GB)
CPU (official table)Intel ATOM C3538 2.1GHz Quad-Core Processor
Official CPU core count4
Fastest official onboard Ethernet2.5 Gbps
Official onboard Ethernet port count4
Official onboard Ethernet rows2 × official 1GbE (2 x Gigabit Ethernet (1G/100M)); 2 × official 2.5GbE (2 x 2.5 Gigabit Ethernet (2.5G/1G/100M))
Aggregate official onboard Ethernet (computed)7 Gbps, computed as the sum of official onboard port count × official port speed from the published LAN rows (2 × official 1GbE (2 x Gigabit Ethernet (1G/100M)); 2 × official 2.5GbE (2 x 2.5 Gigabit Ethernet (2.5G/1G/100M)))
Form factor (official table or official model family)rackmount
Hot-swappable drives (official table)Not listed
Dimensions (official table)Not listed
Weight (official table)Not listed
Power supply (official table)Not listed
Related official records with the same scored hardwareASUSTOR LOCKERSTOR 4RS (AS6504RS) / LOCKERSTOR 4RD (AS6504RD) — official catalog lists AS6504RS, AS6504RD on the same record
PCIe (official catalog) (official table)PCIe 3.0 x8 slot (black, x4 link)
PriceCheck price
ASUSTOR LOCKERSTOR 4 Gen3 (AS6804T)
8.4/10
#1 · 4 official bays, 16 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-435xeu
6.2/10
#2 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-432pxu
5.8/10
#3 · 4 official bays, 2 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-432x
5.4/10
#4 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-432xeu
5.4/10
#5 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-i410x
5.4/10
#6 · 4 official bays, 8 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
QNAP TS-467x
4.7/10
#8 · 4 official bays, 4 GB official installed memory, 10GbE official onboard Ethernet, 4-core official CPU
Synology RS826+
3.6/10
#9 · 4 official bays, 4 GB official installed memory, 1GbE official onboard Ethernet, 4-core official CPU
QNAP TBS-464
3.3/10
#10 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-410e
3.3/10
#11 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-453e
3.3/10
#12 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-464
3.3/10
#13 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-464eu
3.3/10
#14 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-464u
3.3/10
#15 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-473a
3.3/10
#16 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-h665
3.3/10
#17 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-h665u
3.3/10
#18 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-h765eu
3.3/10
#19 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TVS-h474
3.3/10
#20 · 4 official bays, 8 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR LOCKERSTOR 4 Gen2+ (AS6704T v2)
3.2/10
#21 · 4 official bays, 4 GB official installed memory, 5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR AS5304T
2.5/10
#22 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR AS5404T
2.5/10
#23 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR LOCKERSTOR 4 Gen2 (AS6704T)
2.5/10
#24 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-433
2.5/10
#25 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-433eu
2.5/10
#26 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS925+
2.5/10
#27 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS925neo+
2.5/10
#28 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS425+
2.2/10
#29 · 4 official bays, 2 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
QNAP TS-462a
1.8/10
#30 · 4 official bays, 4 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology DS423
1.7/10
#31 · 4 official bays, 2 GB official installed memory, 1GbE official onboard Ethernet, 4-core official CPU
ASUSTOR DRIVESTOR 4 Pro Gen2 (AS3304T v2)
1.4/10
#32 · 4 official bays, 2 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR DRIVESTOR 4 (AS1104T)
1.2/10
#33 · 4 official bays, 1 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
ASUSTOR DRIVESTOR 4 Gen2 (AS1204T)
1.2/10
#34 · 4 official bays, 1 GB official installed memory, 2.5GbE official onboard Ethernet, 4-core official CPU
Synology RS422+
0.9/10
#35 · 4 official bays, 2 GB official installed memory, 1GbE official onboard Ethernet, 2-core official CPU