WD 3.84TB U.2 NVMe SSD - Live Prices

1 drives tracked. From $208.07/TB. Updated every 4 hours.

Buy or Skip?

✓ Buy if: you specifically need WD at this capacity for compatibility. 5-year warranty included.

✗ Skip if: you need higher workload rating than 550TB/year.

Buy on Amazon → $799.00

Best $/TB

$208.07

Drives

Interface

NVMe-PCIe4

At $208.07/TB, WD 3.84TB NVMe drives are $198.97/TB cheaper than the 3.84TB NVMe category average of $407.04/TB — strong value at this capacity.

WD 3.84TB NVMe - should you buy?

WD Ultrastar DC SN655 3.84TB delivers 6,800MB/s read throughput for cloud scale-out deployments. 1 DWPD endurance, U.3 form factor. From $208.07/TB.

U.2 is not M.2

Drives on this page use a 2.5-inch U.2 or U.3 connector, not the M.2 slot on a desktop board. Running one needs a U.2 backplane, a dedicated bay, or a PCIe-to-U.2 adapter with a power feed. Check the form-factor column on each row.

$/TB ▲	Brand / Model	Cap	Interface	Tech	Cache	Sector	Wty	Price	Cond.	90D	Buy
👑$208.07 ~ 30d avg	WD Ultrastar DC SN655 3.84TB U.3 WUS5EA138ESP7E1 5yr	3.84TB	NVMe-PCIe4	TLC	—	—	5yr	$799.00	new		Buy →Details	▼

Drive Specifications

WD Ultrastar DC SN655 3.84TB U.3

WUS5EA138ESP7E1

$208.07/TB

$799.00 total

Capacity

3.84TB

Interface

NVMe-PCIe4

Form Factor

U.3

Recording

TLC

RPM

N/A

Cache

N/A

Sector Size

—

Workload

—

Warranty

5 years

Other WD NVMe capacities

1.6TB 3.84TB 7.68TB 15.36TB

Other brands at 3.84TB NVMe

Kioxia Micron Samsung Seagate WD

Frequently Asked Questions

The WD 3.84TB NVMe SSD is designed for enterprise mixed workloads including virtualization, databases, and analytics. Check DWPD rating: 1 DWPD suits read-intensive; 3 DWPD handles write-heavy OLTP.

WD 3.84TB NVMe drives use U.2 or U.3 connectors. Compatible with Dell PowerEdge, HPE ProLiant Gen10+, Supermicro, and any server with NVMe U.2 backplane. U.2 to PCIe adapters ($15-50) work for desktop servers.

TLC (Samsung PM9A3, Micron 7450) offers higher write endurance for mixed workloads. QLC (Solidigm D5-P5336) is cheaper per TB, ideal for read-heavy AI data lakes and CDN. Match NAND type to your write volume.

Use Case Scenarios

🗄️

OLTP Database Primary Storage

PostgreSQL, MySQL or Oracle requiring low latency and high IOPS.

✓ Excellent fit

NVMe delivers sub-200μs latency vs 5ms for HDD — a 25x improvement that directly reduces query response times. At 1 DWPD verify your daily write volume stays within endurance limits.

🤖

AI/ML Training & Inference

GPU server loading training datasets or serving inference at high throughput.

✓ Excellent fit

NVMe at 6,900MB/s eliminates storage bottlenecks when loading datasets to GPU memory. Consider multiple drives for larger datasets.

💾

Bulk Cold Data Archive

Storing large volumes of infrequently accessed data.

✗ Not ideal

At ~$208/TB, NVMe costs 10x more than enterprise HDD for cold data. Unless you need fast retrieval, HDDs or LTO tape are far more cost-effective.

Maintenance & Troubleshooting

Maintenance Checklist

On installUpdate drive firmware

Check manufacturer website for latest firmware. Enterprise SSDs receive updates that fix performance and reliability issues.

On installEnable power loss protection verification

Enterprise NVMe drives have onboard capacitors for power loss protection. Verify in drive logs after first power cycle.

MonthlyCheck SMART/NVMe health attributes

Run nvme smart-log /dev/nvme0 (Linux). Monitor: Media_Errors, Available_Spare, Percentage_Used.

MonthlyMonitor write endurance consumption

Track Percentage_Used SMART attribute. At 80%+ consider planning replacement. At 3.84TB and 1 DWPD you have 7,176,192GB lifetime writes.

QuarterlyReview error logs in server BMC

Check iDRAC, iLO or IPMI logs for NVMe errors, PCIe link speed downgrades, or unexpected resets.

Troubleshooting Guide

Cause: PCIe slot not initialized, missing NVMe driver, BIOS not updated, or U.2 cable issue.

Fix: Check BIOS for NVMe in PCIe enumeration. Update server firmware. Reseat U.2 cable. Verify PCIe bifurcation if using adapter. Test in another slot.