SPARC S7-2L servers support Oracle 6.8 TB NVMe SSD v3 as a boot device.
An Oracle PCIe Switch Card is not required in a four NVMe drive configuration. The switch function is included in the motherboard. The SPARC S7-2L Server can support three Oracle PCIe Switch Cards. Additional Oracle PCIe Switch Cards are required to support backplane configurations with more than four NVMe drives.
Refer to the server documentation at https://www.oracle.com/goto/s7-2l/docs.