Windows is supported for the DS3500, but specifically, it's an old system that was only validated for Windows Server 2012 R2 for the purposes of Hyper-V. Still, SAS is SAS, and while Dual Controller setups can be finnicky with firmware interoperability, sometimes it "just works". Your hurdle here is that you have a dual controller unit that expects MPIO to be used with Windows Server. Windows 11 is completely free of MPIO. Can't even enable it in Powershell. So you're going to be limited to a single SAS cable to one controller. Since this is not going to be high performance and you're going to be limited to 1 6Gbps SAS port, I'd just find an old Broadcom 9207-8e on eBay as an HBA to plug it into. You don't want to sink too much money into this old thing for a Windows 11 platform.