Would it beneficial to setup 3 SSDs and a HDD in RAID? I've read that the HDD can benefit from SSD caching. Can I install the OS on one SSD, use other SSD for samples and the last one for SSD cache on the HDD? If so, how can I do it?
You´d do a Raid 0 with 2 SSDs, and you´d use 1 SSD for caching, leaving the HDD just for storage