The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.

2.2.2 Installation on an Aura7 NVMe device fails

Oracle Linux 6.10 installation fails if the target device is an Aura7 NVMe add-in card with two block devices. Although the card has two independent NVMe controllers and devices, they are assigned identical WWIDs. The version of GRUB in Oracle Linux 6.10 does not support this NVMe device.

(Bug ID 28152200)