My home file server is Server 2012 R2 standard with a 4 TB Intel RST RAID 1 array with dedupe enabled. It's storage for backups and surveillance video. I'd like to add a SSD write cache in the 128 GB range. Ideally only caching of certain folders or even volume/partitions. PrimoCache might work but they want $120 for the license. Any others work considering?