How Can I Create an Affordable SAN Storage Setup Without Compromising Performance and Reliability?

Hi everyone,

I'm in the process of setting up a SAN (Storage Area Network) storage system and am trying to find a balance between cost, performance, and reliability. As a DIY enthusiast, I'm keen on building the system myself rather than purchasing a pre-built solution. However, I'm aware that SAN storage can be quite complex and expensive, so I'm looking for advice on how to keep the costs down while still achieving a robust and efficient setup. Here are some specific points I'd like to cover:

1. Hardware Selection:
   • Server Hardware: What are some cost-effective server options that can handle SAN duties? Are there any specific models or brands that offer good performance without breaking the bank?
   • Storage Devices: Is it better to go with traditional HDDs or should I invest in SSDs for better performance? How can I mix and match these to optimize cost and performance?
   • Networking Equipment: What type of networking gear is necessary for a reliable SAN setup? Can I use off-the-shelf networking switches, or do I need specialized SAN switches?
2. Software and Configuration:
   • SAN Management Software: Are there any free or low-cost SAN management software options that are reliable and feature-rich? How do they compare with commercial solutions?
   • RAID Configuration: What RAID levels should I consider for a good balance between performance, redundancy, and cost? Is software RAID a viable option, or should I invest in a hardware RAID controller?
   • File Systems and Protocols: Which file systems and protocols are best suited for a DIY SAN setup? Should I use iSCSI, Fibre Channel, or another protocol?

I would love to hear from those of you who have experience with setting up SAN storage systems. Any advice, tips, or personal experiences you can share would be incredibly helpful. I'm especially interested in hearing about specific hardware recommendations, software choices, and any lessons learned from your own projects.

Thanks in advance for your help!