SanDisk Reveals ULLtraDIMM Solid-State Drive

SanDisk Announces SSDs in DIMM Form-Factor

by Anton Shilov
01/20/2014 | 11:00 PM

SanDisk Corp., one of the world’s largest makers of NAND flash-based devices, on Monday announced that its ULLtraDIMM solid-state drive (SSD) in DDR3 DIMM form-factor is now shipping for qualification with select enterprise servers. The innovative solid-state storage solution promises to provide extremely low latency and open doors to brand-new applications.


The ULLtraDIMM is available in capacities of 200GB and 400GB, and can scale linearly, allowing it to meet the capacity requirements of any enterprise applications. The SSDs are based on multi-level-cell (MLC) NAND flash memory made using 19nm fabrication process, but provide up to ten drive writes per day (DWPD) to meet the endurance needs of write intensive and mixed-workload applications thanks to Smart Storage Systems’ Guardian technology.

The ULLtraDIMM closes the last performance gap in current storage solutions by placing flash as close as possible to the CPU and applications. The ULLtraDIMM’s connects flash storage to the memory channel using an industry standard DIMM form factor. This ensures ultra-low latency in business applications and results in improved application response times. Additional ULLtraDIMM SSDs can also be added to available DIMM slots, scaling performance and capacity without impacting latency.

The ULLtraDIMM is ideally suited for large enterprise customers in application environments where high performance at deterministic ultra-low latency with no performance load spikes is required for ultimate efficiency. Environments primed for ULLtraDIMM deployment include database/cloud, Big Data analytics, high-frequency trading (HFT) and other financial applications, server and storage virtualization and consolidation, and virtual desktop infrastructure (VDI).

“The SanDisk ULLtraDIMM SSD was designed to expand the reach of ultra-low latency flash storage throughout the data center and scale to meet the requirements of any enterprise application, no matter how bandwidth or capacity intensive. The ULLtraDIMM SSD’s linear performance scalability and innovative DIMM form factor allow organizations to deploy flash as their application requirements change, without requiring significant infrastructure investment,” said John Scaramuzzo, senior vice president and general manager, enterprise storage solutions at SanDisk.

SanDisk’s ULLtraDIMM SSD will be used by IBM under the eXFlash DIMM brand name. IBM recently announced that the eXFlash DIMM is an option for its System x3850 and x3950 X6 servers providing up to 12.8TB of flash capacity. IBM tested the solution under a variety of enterprise workloads and end-user scenarios. These early benchmarks showed that the eXFlash DIMM SSD achieved 5-10ms write latency, the lowest in the industry.