High-performance NVMe™ SSDs enable enterprise workloads
The use of NVMe™ in the data centre continues to grow as modern applications and workloads demand more performance. Western DigitaI Ultrastar DC SN840 Performance NVME SSDs are designed as primary storage for HPC servers and as primary storage in external storage arrays.

Performance NVMe™ SSDs enable enterprise workloads
Performance NVMe SSDs target cloud computing and enterprise workloads that require low latency for data and high availability of data. These applications include real-time data analytics, cloud computing, OLTP/OLAP databases, artificial intelligence (AI), machine learning (ML), pattern recognition and virtualisation. The Ultrastar DC SN840 is Western Digital’s third generation of high-performance NVMe data centre SSDs with PCIe Gen 3.1 (dual-port), NVMe 1.3, offering up to 3,470/3,300 MB/s sequential read/write performance and up to 503K IOPS mixed random 70/30 read/write performance.

Dual-port leadership
The Ultrastar DC SN840 extends Western Digital’s leadership in dual-port architecture by vertically integrating proven flash controllers. Dual-port high availability supports two redundant paths to the SSD and is critical to ensuring data access in the event of a data path failure.

Specifications
– Capacity: 3.84TB
– Form factor: 2.5 inch
– Sequential read performance: 3470(max MB/s, Seq 64KiB)
– Sequential write performance: 3250(max MB/s, Seq 64KiB)
– Random read: 780KIOPS (max, Rnd 4KiB)
– Random write: 159KIOPS (max, Rnd 4KiB)
– Interface: PCIe 3.1 1×4 or 2×2 (NVMe 1.3c compliant)
– Security: ISE
– Endurance (TBW): 1
– Dimensions (L x W x H): 100.45mm x 69.85mm x 15mm
– Weight: 172gms
– Model number: WUS4BA138DSP3X3
– Operating temperature: 0°C to 70°C
– Non-operating temperature: -40°C to 85°C
– Certifications: BSMI, ICES-003/NMB-003, CE, FCC, KC, Maghreb, RCM, UKCA, VCCI, CB Scheme, TUV, UL

Product Features
– Western Digital NVMe 1.3c compliant dual-port controller; PCIe 3.1
– Western Digital 96-layer 3D TLC NAND
– 1 and 3 DW/D
– Performance: up to RR = 780K IOPS, RW = 257K IOPS, Mixed Random 70/30 Read/Write = 503K IOPS
– MTBF value of 2.5 million hours (projected)
– Security options: Secure Erase (SE) and Instant Secure Erase (ISE), TCG Ruby, FIPS 140-2 validation (coming soon)
– Enterprise features: 128 namespaces, atomic writes, multiple sector sizes, protection information, SGL, NVMe-MI version 1.1

Compatibility
– Compatible with Windows, Windows Server and Linux