Performance NVMe™ SSDs Enable Enterprise Workloads
NVMeTM adoption in the data center continues to grow as modern applications and workloads demand more performance. Performance NVMe SSDs are designed for primary storage for HPC servers and primary storage in external storage arrays. Performance NVMe SSDs target cloud compute and enterprise workloads that require low latency to 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 virtualization. The Ultrastar DC SN840 is Western Digital’s 3rd generation of performance NVMe SSD for data center with PCIe Gen 3.1 (dual-port), NVMe 1.3, providing up to 3,470/3,330 MB/s Sequential Read/Write and up to 503K IOPS mixed random 70/30 read/write performance.

Dual-port Leadership
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 access to data in the event of a failure in the data path.

Quality, Reliability and Security
Ultrastar DC SN840 is built on Western Digital’s 96-layer 3D TLC NAND, with capacities up to 15.36TB in a U.2 2.5” form factor. It offers two endurance classes for workloads; 1 DW/D for read intensive workloads common with the majority of enterprise applications and cloud services, and 3 DW/D for higher write or mixed use workloads such as running SQL. The DC SN840 has a fiveyear limited warranty with enterprise reliability MTBF of 2.5M hours (projected).
The DC SN840 offers security options with Secure Erase (SE), Instant Secure
Erase (ISE) with an AES-256 encryption engine, TCG Ruby and FIPS 140-2 validation (forthcoming).

Features
• Western Digital dual-port NVMe 1.3c compliant controller; PCIe 3.1
• Western Digital 96-Layer 3D TLC NAND
• 1 and 3 DW/D2
• Performance: up to RR = 780K IOPS, RW = 257K IOPS, Mixed Random 70/30 Read/Write = 503K
IOPS
• MTBF rating of 2.5 million hours (projected)
• Security Options: Secure Erase (SE) and Instant Secure Erase (ISE), TCG Ruby, FIPS 140-2 validation
(forthcoming)
• 5-year limited warranty
• Enterprise features including – 128 namespaces, atomic writes, multiple sector sizes, protection
information, SGL, NVMe-MI version 1.1

Applications & Workloads
• High performance computing (HPC)
• High availability storage arrays
• All mixed use workloads
• Artificial Intelligence/Machine Learning
• Online transaction processing (OLTP) and online analytical processing (OLAP)
• Real-time analytics
• Pattern recognition
• Virtualization