//.ssh will be gone after reboot

Hi,

I want to login to another server with public/private key authentication

I configured it last week and it worked correctly.

I had to reboot the server for some reasons last night and then i found the //.ssh directorynot exists.

Also i had some files on /optand all of them was disappeared after reboot!!

(VMware ESXi 6.0.0)

Please help me to fix this issue.