How to size your bandwidth for your storage subsystem | The 2-5-9 Rule

In this video, I'm going to show you how to size your bandwidth for your storage server build. People often ask me questions like: "Do I have enough bandwidth for my storage setup?" "If I upgrade to SAS-3 HDDs, do I need to upgrade my LSI HBA SAS controller?" I usually answer these questions using the 2-5-9 Rule. This rule comes from the reference performance limits of the 3 types of SAS/SATA storage devices. For spinning HDDs, these typically max out at around 2Gbps. For SATA or SAS-2 SSDs, these typically max out at around 5Gbps. And for SAS-3 SSDs, these typically max out at 9Gbps. Hence, the 2-5-9 Rule. Using this information, I'll walk you through an example with a 24-bay Supermicro 846 SAS-2 expander backplane (BPN-SAS2-846EL1). Hopefully this video helps you guys figure out if your hardware is sufficient for your I/O bandwidth needs! :-) Timestamps: 0:50 - Explaining the 2-5-9 Rule 8:57 - Example with BPN-SAS2-846EL1 backplane 15:41 - PCIe bandwidth considerations Links to videos mentioned: Cost of SAS vs SATA Hard drives -    • Cost of SAS vs SATA Hard Drives | Sho...   How to understand performance -    • How to Understand Performance | bandw...   If you'd like to support this channel, please consider shopping at my eBay store: ebay.to/2ZKBFDM eBay Partner Affiliate disclosure: The eBay links in this video description are eBay partner affiliate links. By using these links to shop on eBay, you support my channel, at no additional cost to you. Even if you do not buy from the ART OF SERVER eBay store, any purchases you make on eBay via these links, will help support my channel. Please consider using them for your eBay shopping. Thank you for all your support! :-)