Latest Articles
October 20th, 2021
Low Power DSP-Based Transceivers for Data Center Optical Fiber Communications
As the volume of global data continues to grow exponentially, data center operators often confront a frustrating challenge: how to process a rising tsunami of terabytes within the limits of their facility’s electrical power supply – a constraint imposed by the physical capacity of the cables that bring electric power from the grid into their data center.
Fortunately, recent innovations in optical transmission technology – specifically, in the design of optical transceivers – have yielded tremendous gains in energy efficiency, which frees up electric power for more valuable computational work.
Recently, at the invitation of the Institute of Electrical and Electronics Engineers, my Marvell colleagues Ilya Lyubomirsky, Oscar Agazzi and I published a paper detailing these technological breakthroughs, titled Low Power DSP-based Transceivers for Data Center Optical Fiber Communications.
Read MoreOctober 18th, 2021
Network Visibility of 5G Radio Access Networks, Part 1
The Radio Access Network (RAN) is dramatically changing with the introduction of 5G networks and this, in turn, is driving home the importance of network visibility. Visibility tools are essential for mobile network operators to guarantee the smooth operation of the network and for providing mission-critical applications to their customers.
In this blog, we will demonstrate how Marvell’s Prestera® switches equipped with TrackIQ visibility tools are evolving to address the unique needs of such networks.
The changing RAN
The RAN is the portion of a mobile system that spans from the cell tower to the mobile core network. Until recently, it was built from vendor-developed interfaces like CPRI (Common Public Radio Interface) and typically delivered as an end-to-end system by one RAN vendor in each contiguous geographic area.
Lately, with the introduction of 5G services, the RAN is undergoing several changes as shown in Figure 1 below:
Read MoreOctober 12th, 2021
Trends Driving Innovations in Next-Generation Retail Networking
The retail segment of the global economy has been one of the hardest hit by the Covid-19 pandemic. Lockdowns shuttered stores for extended periods, while social distancing measures significantly impacted foot traffic in these spaces. Now, as consumer demand has shifted rapidly from physical to virtual stores, the sector is looking to reinvent itself and apply lessons learned from the pandemic. One important piece of knowledge that has surfaced across the retail industry: Investing in critical data infrastructure is a must in order to rapidly accommodate changes in consumption patterns.
Consumers have become much more conscious of the digital experience and, as such, prefer a seamless transition in shopping experiences across both virtual and brick-and-mortar stores. Retailers are revisiting investment in network infrastructure to ensure that the network is “future-proofed” to withstand consumer demand swings. It will be critical to offer new customer-focused, personalized experiences such as cashier-less stores and smart shopping in a manner that is secure, resilient, and high performance. Infrastructure companies will need to be able to bring a complete set of technology options to meet the digital transformation needs of the modern distributed enterprise.
Highlighted below are five emerging technology trends in enterprise networking that are driving innovations in the retail industry to build the modern store experience.
Read MoreOctober 4th, 2021
Marvell and Los Alamos National Laboratory Demonstrate High-Bandwidth Capability for HPC Storage Workloads in the Data Center with Ethernet-Bunch-Of-Flash (EBOF) Platform
As data growth continues at a tremendously rapid pace, data centers have a strong demand for scalable, flexible, and high bandwidth utilization of storage solutions. Data centers need an efficient infrastructure to meet the growing requirements of next-generation high performance computing (HPC), machine learning (ML)/artificial intelligence (AI), composable disaggregated infrastructure (CDI), and storage expansion shelf applications which necessitate scalable, high performance, and cost-efficient technologies. Hyperscalers and storage OEMs tend to scale system-level performance linearly, driven by the number of NVMe SSDs that plug into the system. However, current NVMe-oF storage target Just-A-Bunch-Of-Flash (JBOF) architecture connects fast performance NVMe SSDs behind the JBOF components, causing system-level performance bottlenecks due to CPU, DRAM, PCIe switch and smartNIC bandwidth. In addition, JBOF architecture requires a fixed ratio of CPU and SSDs which results in underutilized resources. Another challenge with JBOF architecture is the scalability of CPU, DRAM, and smartNIC devices does not match the total bandwidth of corresponding NVMe SSDs in the system due to the overall system cost overhead and thus, impacts system-level performance.
Marvell introduced its industry-first NVMe-oF to NVMe SSD converter controller, the 88SN2400, as a data center storage solution application. It enables the industry to introduce EBOF storage architecture which provides an innovative approach to address JBOF architecture challenges, and truly disaggregate storage from the compute. EBOF architecture replaces JBOF bottleneck components like CPUs, DRAM and smartNICs with Ethernet switch and terminates NVMe-oF either on the bridge or Ethernet SSD. Marvell is enabling NAND vendors to offer Ethernet SSD products. EBOF architecture allows scalability, flexibility, and full utilization of PCIe NVMe drives.
October 3rd, 2021
Unleashing 5G Network Performance with Next Generation Ethernet
Blink your eyes. That’s how fast data will travel from your future 5G-enabled device, over the network to a server and back. Like Formula 1 racing cars needing special tracks for optimal performance, 5G requires agile networking transport infrastructure to unleash its full potential. The 5G radio access network (RAN) requires not only base stations with higher throughputs and soaring speeds but also an advanced transport network, capable of securely delivering fast response times to mobile end points, whatever those might be: phones, cars or IoT devices. Radio site densification and Massive Machine-type Communication (mMTC) technology are rapidly scaling the mobile network to support billions of end devices1, amplifying the key role of network transport to enable instant and reliable connectivity.
With Ethernet being adopted as the most efficient transport technology, carrier routers and switches are tasked to support a variety of use cases over shared infrastructure, driving the growth in Ethernet gear installations. In traditional cellular networks, baseband and radio resources were co-located and dedicated at each cell site. This created significant challenges to support growth and shifts in traffic patterns with available capacity. With the emergence of more flexible centralized architectures such as C-RAN, baseband processing resources are pooled in base station hubs called central units (CUs) and distributed units (DUs) and dynamically shared with remote radio units (RUs). This creates even larger concentrations of traffic to be moved to and from these hubs over the network transport.
