The SANDISK WD Red SN700 (WDS400T1R0C) is a large 4 TB NVMe SSD optimized for continuous operation in NAS systems. With a PCIe Gen3×4 interface, it achieves sequential speeds of up to 3,430 MB/s read and up to 3,100 MB/s write. It uses 96-layer 3D TLC NAND (Toshiba BiCS4), has a built-in DRAM-supported WD Triton MP28 controller, and offers random speeds of up to 550,000 IOPS for reading and 520,000 IOPS for writing. It is designed for 24/7 use with high TBW and reliability.

Specifications:
Model: WDS400T1R0C
Capacity: 4 TB
Form factor: M.2 2280
Interface: PCIe Gen3×4 NVMe
Sequential read: up to 3,430 MB/s
Sequential write: up to 3,100 MB/s
Random read (4 KB): up to 550,000 IOPS
Random write (4 KB): up to 520,000 IOPS
NAND: 96-layer 3D TLC NAND (Toshiba BiCS4)
Controller: WD Triton MP28 (20-82-00700-A2) with DRAM
TBW: 5,100 TB
MTBF: approximately 1,800,000 hours
Compatibility: Windows, Linux, NAS systems
Dimensions (L × W × H): 80 × 22 × 2.38 mm
Weight: approx. 9.6 g
Certifications: BSMI, ICES‑003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, TÜV, UL