Technical Snapshot

The SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe is a high-performance E1.S solid state drive built with TLC flash and a PCIe 5.0 x4, NVMe interface. It delivers sequential read speeds Up to 13,800 MB/s and sequential write speeds Up to 6,500 MB/s. Random I/O reaches 2,700,000 read IOPS and 320,000 write IOPS. The drive offers 7.68TB of storage, a 2,500,000 hours MTBF, backed by a 5 years warranty. Part of WD's Ultrastar DC SN861 product line, this drive targets enthusiast gamers, content creators, and workstation builders requiring high-bandwidth NVMe storage.

Use Case
Gaming, content creation, high-bandwidth NVMe storage
Compatibility
E1.S slot, PCIe 5.0 x4, NVMe-capable motherboard
Category
Internal NVMe SSD — WD Ultrastar DC SN861
WD
WD SSD
WD Ultrastar DC SN861

SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe

PCIe 5.0 x4, NVMe · E1.S · TLC · Up to 13,800 MB/s Read

Total usable storage capacity of the drive.
Capacity 7.68TB
Maximum sequential read speed under optimal conditions.
Seq Read Up to 13,800 MB/s
Maximum sequential write speed under optimal conditions.
Seq Write Up to 6,500 MB/s
Physical and protocol interface connecting the drive to the host system.
Interface PCIe 5.0 x4, NVMe
MPN0TS2571
CategorySolid State Drives
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Performance & Interface

Form FactorE1.S
InterfacePCIe 5.0 x4, NVMe
Sequential ReadUp to 13,800 MB/s
Sequential WriteUp to 6,500 MB/s
Random Read IOPS2,700,000
Random Write IOPS320,000
NAND TypeTLC
MTBF2,500,000 hours
Warranty5 years

Full Specifications

Data sourced from WD product specifications
Storage
Product LineUltrastar DC SN861
Capacity7.68TB
Form FactorE1.S
InterfacePCIe 5.0 x4, NVMe
NAND TypeTLC
Performance
Sequential ReadUp to 13,800 MB/s
Sequential WriteUp to 6,500 MB/s
Random Read IOPS2,700,000
Random Write IOPS320,000
Endurance & Reliability
MTBF2,500,000 hours
Warranty5 years
Product
BrandWD
MPN0TS2571

Support & Downloads

SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe Firmware UpdateLatest firmware · Check WD support
WD Support →
SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe DatasheetPDF · Technical specifications
WD Support →
← Back to WD SSD Catalog

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Frequently Asked Questions

Is the SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe compatible with my motherboard?

The SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe uses a E1.S form factor with PCIe 5.0 x4, NVMe interface. It is compatible with any motherboard that has a matching E1.S slot. This includes AMD AM5/AM4 and Intel LGA 1851/LGA 1700 platforms. PCIe is backward-compatible, so older PCIe generation slots will work at reduced bandwidth.

What systems is the SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe designed for?

The SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe is designed for desktop PCs and workstations with E1.S support. Check your system's storage interface specifications for compatibility.

What is the endurance rating of the SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe?

The SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe with a 2,500,000 hours MTBF, backed by a 5 years warranty. At typical consumer usage of ~50 GB/day, this provides years of reliable operation.

How fast is the SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe?

The SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe delivers Up to 13,800 MB/s sequential read and Up to 6,500 MB/s sequential write speeds. Random I/O performance: 2,700,000 read IOPS and 320,000 write IOPS.

What type of NAND does the SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe use?

The SanDisk Ultrastar DC SN861 7.68TB E1.S NVMe uses TLC flash memory with 7.68TB storage capacity. TLC NAND offers a good balance of performance, endurance, and cost.

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