Hi all, I would like to improve performance in my second pool 3x1TB HDD RAIDz1,I want to lower I/O delay its not high but I was reading also that there shouldn't be any I/O delay, (first pool where is Proxmox I have 2xSSD in RAIDz) by adding SSD drive as cache. I found already on Google some information's how to do it after creating two partitions on SSD (same size?) zpool add rpool cache /dev/sdf1 zpool add rpool log /dev/sdf2 zpool status and now I can't find right answer and that's why I came here again for advice My questions are 1. If I want just for second pool should I write name of second pool instead "rpool" (zpool add secondpoolname cache....)? 2. What will happend when SSD with cache will die? Just performance will drop or some data can be lost also? 3. 2xSSD in Raidz that I'm using for Proxmox, is it good idea to create cache on same SSD in this Raidz and Proxmox on it?