WD

WD Ultrastar DC SN655 15.36TB U.3

WUS5EA1A1ESP7E1
Ultrastar DC SN655oltpTLC15.36TBNVMe-PCIe4U.3
No current price
newNot available
Price updated
Price accurate as of Oct 23, 2026, 12:00 AM
No current offer

The WD Ultrastar DC SN655 15.36TB U.3 is a 15.36TB NVMe-PCIe4 SSD in new condition. It has no current offer on Amazon. The in-stock alternatives nearest its capacity are listed below.

In stock instead - nearest to 15.36TB

6 in-stock listings · this listing has no current offer on Amazon · ranked by live cost per tb, refreshed about once a day

DriveCapacityCondition$/TBPrice
Micron 2TB 2400 M.2 2230 NVMe PCIe 4.0x4 SSD MTFDKBK2T0QFM-1BD1AABYYR
Micron 2TB 2400 M.2 2230 NVMe PCIe 4.0x4 SSD MTFDKBK2T0QFM-1BD1AABYYR
2TBNEW$219.50$439Buy on Amazon
SanDisk Optimus GX 7100M 2TB NVMe SSD
Sandisk Optimus GX 7100M 2TB NVMe SSD, PCIe 4.0, M.2 2230
2TBNEW$225.00$450Buy on Amazon
Kingston NV3 2TB M.2 2230 NVMe SSD
Kingston NV3 2TB M.2 2230 NVMe SSD | Up to 6000MB/s | SNV3SM3/2T0
2TBNEW$225.99$452Buy on Amazon
Kingston 2TB M.2 2230 PCIe Gen 4.0x4 NVMe SSD OM3SGP4 Compatible with Steam ...
Kingston 2TB M.2 2230 PCIe Gen 4.0x4 NVMe SSD OM3SGP4 Compatible with Steam Deck Surface Ally Mini PC Up to 7000 MB/s
2TBNEW$249.50$499Buy on Amazon
Seagate FireCuda 520 2TB
ZP2000GM3A002
2TBNEW$250.00$500Buy on Amazon
Samsung PM9A3 1.92TB M.2 NVMe1.92TBREFURB$468.74$900Buy on Amazon

Where this listing sits: WD 15.36TB NVMe — each page is the live ranking for that slice of the catalogue.

Before you buy: check the bay and the lanes

U.2 and U.3 drives need a backplane wired for NVMe or an adapter carrying PCIe lanes to the bay - a SAS backplane will not do it. Check your chassis supports NVMe in the slot you plan to use before ordering. NVMe drive prices and form factors

Model context

Part of the WD line we track.

Quick Verdict

The WD Ultrastar DC SN655 15.36TB U.3 delivers enterprise NVMe performance. Suited to read-intensive cloud workloads and mixed enterprise applications. Verify U.2/U.3 backplane compatibility before ordering.

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Specifications

Capacity15.36TB
Form FactorU.3
InterfaceNVMe-PCIe4
Recording TechTLCnot sourced
Sector Size—
Workload Rating—
DWPD—
TBW28032TB
Warranty5 years
ASINB0D7X2Z542
Market context

We do not have enough in-stock comparators of this type today to place this price against the rest of the market. The category page below ranks everything we do have.

Where the wider market has moved

These are third-party figures about the retail market as a whole, quoted and dated. They are not our own measurements and they do not describe this specific drive.

Compare against every 15.36TB drive we track →Cheapest per terabyte, all categories →Category price trends →

Also appears in

Enterprise SSDs
Other pages

Frequently Asked Questions

Not right now: Amazon shows no current offer for ASIN B0D7X2Z542. The in-stock alternatives nearest its 15.36TB capacity are on this page, ranked by live price.

This listing (WUS5EA1A1ESP7E1, ASIN B0D7X2Z542) carries no renewed, recertified, refurbished or pulled claim in its title, and Amazon reports it as new. On this site that is what "new" means: sold as factory-new. The stored warranty on this row is 5 years, as the listing states it.

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. At 15.36TB you can store substantial model weights on a single drive.
💾
Bulk Cold Data Archive
Storing large volumes of infrequently accessed data.
✗ Not ideal
At ~$124/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 15.36TB and 1 DWPD you have 28,704,768GB 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.