Looking at some less expensive 4kN hdds myself and came across this: https://techmikeny.com/blogs/techtalk/compatibility-pain-points-4kn-hard-drives-and-backwards-compatibility-with-raid-controllers#:~:text=4Kn hard drives (4K %3D 4096,be used for your data. Of particular note is this statement: "This post will give some background on 4Kn sectored drives and some compatibility issues with Dell and HP RAID controllers that are not compatible with 4Kn hard drives." Given your Broadcom/LSI is likely considered a RAID controller, (my experience with this brand), is possibly your incompatibility with the 4KN hdds. My research and your experience are good reason I will not be purchasing these hdds.