so i picked up a 20$ LSI MegaRaid 9270CV-8i 1GB Cache SAS SATA RAID PCIe 3.0 6Gbps raid controller card should arrive by saturday. i have no idea what firmware its on or if i should even mess with the firmware at all i will be using SATA hard drives if it matters is there a guide that walks me through the update process if i decide the firmware is very old also how does a cache vault work on this card