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Cake day: June 10th, 2023

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  • An HBA (host bus adapter) is a SAS controller (or rather, has a SAS controller chip on it). You mostly just want to make sure that your host (the server) has enough physical PCIe lanes to use the whole card, otherwise you’ll get bottlenecked there. You also want to check whether you’ve got 6G SAS or 12G SAS capability. If your drives only support 6 gig, for example, there’s zero point in buying a 12G SAS card, which is actually nice because 6G cards are a lot cheaper. You do want to make sure you actually need an HBA and not a RAID controller though - they’re easily confused. Not sure if I actually answered anything there but I write SAS firmware and use HBAs all the time, so feel free to ask me more and I’ll try to piece together a coherent answer.







  • Doombot1@lemmy.onetoMemes@lemmy.mlAmd fan
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    4 months ago

    Most of the time, the product itself comes out of engineering just fine and then it gets torn up and/or ruined by the business side of the company. That said, sometimes people do make mistakes - in my mind, it’s more of how they’re handled by the company (oftentimes poorly). One of the products my team worked on a few years ago was one that required us to spin up our own ASIC. We spun one up (in the neighborhood of ~20-30 million dollars USD), and a few months later, found a critical flaw in it. So we spun up a second ASIC, again spending $20-30M, and when we were nearly going to release the product, we discovered a bad flaw in the new ASIC. The products worked for the most part, but of course not always, as the bug would sometimes get hit. My company did the right thing and never released the product, though.