hdd ssd

Hello at all, I installed a Proxmox cluster with 3 cisco server nodes. Each node have 6 SSD's ( 2 x 240GB, 4 x 1TB) and 12 HDD with 2TB each. The first 2 SSDs are used as ZFS raid0 for the system itself. Now I have 4 SSDs(4 x 1TB) and 12HDDs(12x 2TB) left. My idea ist to use 2 of the HDDs in...