Posts Tagged 'QLogic'
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February 08, 2022
存储网络的新发展： 自动驾驶 SANs
By Todd Owens, Field Marketing Director, Marvell and Jacqueline Nguyen, Marvell Field Marketing Manager
Storage area network (SAN) administrators know they play a pivotal role in ensuring mission-critical workloads stay up and running. The workloads and applications that run on the infrastructure they manage are key to overall business success for the company.
Like any infrastructure, issues do arise from time to time, and the ability to identify transient links or address SAN congestion quickly and efficiently is paramount. Today, SAN administrators typically rely on proprietary tools and software from the Fibre Channel (FC) switch vendors to monitor the SAN traffic. When SAN performance issues arise, they rely on their years of experience to troubleshoot the issues.
What creates congestion in a SAN anyway?
Refresh cycles for servers and storage are typically shorter and more frequent than that of SAN infrastructure. This results in servers and storage arrays that run at different speeds being connected to the SAN. Legacy servers and storage arrays may connect to the SAN at 16GFC bandwidth while newer servers and storage are connected at 32GFC.
Fibre Channel SANs use buffer credits to manage the prioritization of the traffic flow in the SAN. When a slower device intermixes with faster devices on the SAN, there can be situations where response times to buffer credit requests slow down, causing what is called “Slow Drain” congestion. This is a well-known issue in FC SANs that can be time consuming to troubleshoot and, with newer FC-NVMe arrays, this problem can be magnified. But these days are soon coming to an end with the introduction of what we can refer to as the self-driving SAN.
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June 02, 2021
用 NVMe 打破数字困境
By Ian Sagan, Marvell Field Applications Engineer and Jacqueline Nguyen, Marvell Field Marketing Manager and Nick De Maria, Marvell Field Applications Engineer
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August 27, 2020
如何在 2020 年获得 NVMe over Fabric 的优势
By Todd Owens, Field Marketing Director, Marvell
As native Non-volatile Memory Express (NVMe®) share-storage arrays continue enhancing our ability to store and access more information faster across a much bigger network, customers of all sizes – enterprise, mid-market and SMBs – confront a common question: what is required to take advantage of this quantum leap forward in speed and capacity?
NVMe provides an efficient command set that is specific to memory-based storage, provides increased performance that is designed to run over PCIe 3.0 or PCIe 4.0 bus architectures, and -- offering 64,000 command queues with 64,000 commands per queue -- can provide much more scalability than other storage protocols.
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