Daniel Helmick | Principal Architect
Samsung
Dan is a Principal Architect focusing on future generation NVMe SSDs for Samsung Semiconductor. A strong background in HDD Control Systems has folded into performance FW in SSDs and future product architectures for storage products of several different medias. Dan has worked closely with customers to understand future requirements, develop industry leading standards to achieve those requirements, and product design for servicing the upcoming features. He has been a primary SSD Architect shaping features such as Zoned Namespaces (ZNS), Flexible Data Placement (FDP), Live Migration (LM), Quality of Service (QoS), and many more industry leading features.
Appearances:
Future of Memory and Storage - Day 1 @ 08:50
Leveraging Exceedance Plots to Debug and Optimize SSD Performance
This presentation introduces Exceedance Plots as a powerful tool for understanding and debugging SSD performance. By highlighting infrequent large latency events, Exceedance Plots provide a valuable supplement to traditional debug methods. The presentation showcases real-world examples of Exceedance Plots in action, demonstrating their ability to identify complex tenant behavior and inform latency monitoring requirements. Real world characterization measurements and useful monitoring points for concern scenarios will be discussed.
Future of Memory and Storage - Day 3 @ 08:35
Improving Per‑VM Performance on Shared SSDs via FDP and Rate Limits
Data centers are deploying ever increasing capacity Solid State Drives (SSDs). These larger capacity SSDs improve costs, reduce system power consumption, and optimizes storage utilization. At the same time, the number of tenants per data center is growing. These end users are maintaining stringent performance expectations based on prior experience with direct access to prior generation SSDs. This presentation will provide an example Virtual Machine (VM) that migrates from a private SSD onto a shared SSD. Building on this example, a proposed emulation method will be discussed using Flexible Data Placement (FDP), rate limiting, and minor extensions. Our goal is to spark a community discussion and gauge industry interest in sustainable, high‑density storage solutions for multi‑tenant data‑center environments.
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