The same 2 disks (sdb is the parity disk) seem to get spun up to read SMART (?) throughout the day. Time is AM, everyone was asleep during that time, no one accessed the NAS. There are no VM's and no dockers in Unraid, I use it as a "simple" NAS. Fusion-MPT 12GSAS SAS3008 PCI-Express in IT Mode The following plugins are installed: CA User Scripts Community Applications Dynamix Cache Dirs Dynamix Schedules Dynamix SSD Trim openVMTools_co