Download/Torrent Box

Hello, I have a lots of spare 4tb SAS drives from work w an old lga1155 pc and I want to build a download/torrent box using Windows where I can remote in using one big volume in Raid 5 or 6 I’m thinking of going w a software Raid like Megaraid. What do you guys think? What HBA card would you recommend?

Use TrueNAS and configure the RAID there. All you need is a HBA, such as LSI or Adaptec. We have articles on both on this forum.