Mriosfer,   The issue is the disk group type, as seen on page 23 of the admin guide here, virtual disk-group expansion is only available with the ADAPT protection level. From what you posted it appears to be a Linear, and not ADAPT or ADAPT Linear, so that is likely the cause.      Let me know if this helps.  
Hi, We're looking to Expand our Disk-Group SSD with two new disk SSD , same model, same capacity. We got setup Virtual Pool as recommendation by Dell documentation . # show disk-groupsName Size Free Pool Tier % of Pool Own RAID Disks Planned Interl Vols Chk Status Current Job Job% Sec Fmt Health----------------------------------------------------------------------------------------------------------------------------------------------------SAS 1181.7GB 1181.7GB A Standard 100 A RAID1 2 0 N/A FTOL VRSC 0% 512n OKSSD 7656.1GB 7656.1GB B Performance 100 B RAID5 5 0 512k FTOL 512n OK---------------------------------------------------------------------------------------------------------------------------------------------------- # show disksLocation Serial Number Vendor Rev Description Usage Jobs Speed (kr/min) Size Sec Fmt Disk Group Pool Tier Health----------------------------------------------------------------------------------------------------------------------------------------------------------0.0 WFKC7Y49 SEAGATE ST34 SAS VIRTUAL POOL VRSC 10 1200.2GB 512n SAS A Standard OK0.1 WFKC7YFK SEAGATE ST34 SAS VIRTUAL POOL VRSC 10 1200.2GB 512n SAS A Standard OK0.2 0SY6378A HGST H1D0 SSD SAS AVAIL 0 1920.3GB 512n Performance OK0.3 0SY68DVA HGST H1D0 SSD SAS AVAIL 0 1920.3GB 512n Performance OK0.4 0SY6RR0A HGST H1D0 SSD SAS VIRTUAL POOL 0 1920.3GB 512n SSD B Performance OK0.5 0SY6R6ZA HGST H1D0 SSD SAS VIRTUAL POOL 0 1920.3GB 512n SSD B Performance OK0.6 0SY6LJNA HGST H1D0 SSD SAS VIRTUAL POOL 0 1920.3GB 512n SSD B Performance OK0.7 0SY6GNYA HGST H1D0 SSD SAS VIRTUAL POOL 0 1920.3GB 512n SSD B Performance OK0.8 0SY6D4KA HGST H1D0 SSD SAS VIRTUAL POOL 0 1920.3GB 512n SSD B Performance OK---------------------------------------------------------------------------------------------------------------------------------------------------------- expand disk-group disk 0.2 SSDError: The pool requested is of the wrong storage class. (2022-05-12 19:47:11) Can anyone confirm that we cant add new disk Virtual Pool adding new members????  Looks like we need to create a RAID 1 and it will Virtually expand the space , but technically is several disk as raid 5 , and 2 as raid 1...  Regards,  
ME5 The pool requested is of the wrong storage class