Grid Infrastructure version: 19c
OS : RHEL 8.2
Back in the 11.2.0.4 days, when I had to add a LUN to an ASM diskgroup, it must be partitioned first with MSDOS or GPT before presenting it to ASM.
For example, if a new LUN /dev/emcpowerb, a partition covering the entire LUN must be created with MSDOS or GPT partition scheme and /dev/emcpowerb1 is presented to the ASM layer.
My colleague says that partitioning is not needed in 19c and the LUN can be added directly to the ASM diskgroup. Is this true ?