ilo - What is the NAND used for in the HPE ProLiant DL360p Gen8?

I have a server with the error: 'iLO Self-Test reports a problem with: Embedded Flash/SD-CARD' ' Embedded media manager failed initialization '

HPE advises the following: https://support.hpe.com/hpsc/doc/public/display?docId=emr_na-c04996097

I've now reached the step of all steps, replace the system board. But I'm wondering what the impact would be if I would not replace the board. I do not use the SD-CARD. I'm not sure what the NAND actually is used for and what it stores, and further more what do I risk if I do not resolve this issue?

I believe it might be loss of logs from the iLO and perhaps even loss of settings from the iLO?

Edit, it is now months later, servers still out of warranty, even found more similar issues with NAND which all fit under this HPE Advisory umbrella. Using the RESTful Interface Tool solves annoying problems with hands on support for the AC power removal part. But sadly I still can't fix all issues. While I've seen some information, in this thread, online and the like. I can't find any conclusive information from HPE what the impact is for NAND issues like this.