Record the experience of Oracle ODA X4-2 expanding the hard disk of computing node
1. It is confirmed that the OS is indeed done by raid, but no raid card information is found in ILOM and OS.
2. The hard disk is identified by plug and play, including OS and ILOM.
3. According to the official manual, BIOS and Oracle System Assistant do not have the option of RAID operation, so confirm that there is no raid card.
4. Check the local hard disk through oakcli show disk-local, and compare the disks in lvm. It is found that ODA is implemented in soft RAID through linux OS, that is, RAID made by mdadm.
