Getting ORA-15041 during disk replacement rebalance

Hello,

Running on an older X5-2 ODA, 2 virtual machines, version 18.3.0.0.0, OVM 3.4.4, GI_HOME 18.3.0.0.180717 and DB_HOME 12.1.0.2.170814. Using ACFS filesystems to store data and we are triple mirrored on storage. There is no additional storage space to add any more drives. We can only replace current drives.

We replaced a disk that was in predictive failure but when monitoring the sync & rebalancing there was an ORA-15041 error (there are more disks to replace). Below is data that I've gathered so far:

Group 3 is RECO

select disk_number "Disk #", free_mbfrom v$asm_diskwhere group_number = 3 order by 2;

Disk # FREE_MB