Change Xsan filename case sensitivity in macOS Server
If all the computers on your SAN use macOS, you can specify whether a volume ignores capitalization in filenames. For example, a volume can consider myfile, MyFile, and MYFILE to be the same or different filenames. This option is on by default if the SAN consists only of Mac computers.
If case insensitivity is selected, the volume considers filenames to be the same if they’re spelled alike but capitalized differently.
If case insensitivity isn’t selected, the volume considers filenames to be different if they’re spelled alike but capitalized differently.
For best performance with volumes that you share using the SMB protocol, make them case insensitive.
When you change case sensitivity, Xsan checks all existing filenames to make sure the change won’t result in filenames being considered the same. This check can take a while.
In the Server app sidebar, select Xsan from the list of advanced services.
Select the volume you want to edit.
Click and choose Edit Volume.
Select “Use case sensitive file system,” then click OK.
After you click OK, the volume is unmounted from all SAN computers, then remounted.