Hello polezhaevdmi, Hotspare drives are global on a compellent system. How many drives do you have in total between SC4020 & your expansion enclosure?  As when you add drives to your system, hotspares are normally auto reserved by SCOS based on the  total# of drives in the system.
Customer owns an SC4020 system with JBOD expansion shelf, almost full of 900GB 10KRpm drives. Today Customer bought a pack of drives to complete the storage fill, and asked for help to assign all drives without payload as hot-spare drives at his main disk folder "Assigned". However, the appropriate Action in DSM console was not found. The extra hot-spare drive (5 intead of 4) was created by Dell Engineer a long time ago at system initialization (Customer asked about that). I found the possible workaround (look the pictures attached): - I created the "TEMP1" disk folder, and placed the new drives into. The SCOS automatically assigned a pair of them as hot-spare; - I released the non-hotspare drives from "TEMP1" and created "TEMP2"; - I made a second iteration and got one more hotspare drive in separate disk folder; - As I know (from Community forum, possibly) the hotspare drives are global in SCOS, thus, the hostpare drives from "TEMP1" and "TEMP2" folders can be used as spare for main, "Assigned" folder. The storage runs SCOS version 7.2. My questions: - Could You confirm the spare drives are global across disk folders, and my workaround is valid? - Could You publish the CLI-based approach to forcibly assign the hot-spare role to dedicated drives without extra limitations? I mean command at SCOS while being conneced via serial cable / Telnet / SSH. [IMAGE]Workaround (Phase01) [IMAGE]Workaround (Phase02) [IMAGE]Workaround (Phase03)
SC4020: assign a LOT of hotspare drives