A systems administrator is troubleshooting a performance issue with a virtual database server. The administrator has identified the issue as being disk related and believes the cause is a lack of IOPS on the existing spinning disk storage. Which of the following should the administrator do NEXT to resolve this issue?

A. Upgrade the virtual database server.
B. Move the virtual machine to flash storage and test again.
C. Check if other machines on the same storage are having issues.
D. Document the findings and place them in a shared knowledge base.