An administrator is unable to start the vCenter Server service. The vpxd.log file shows this service failure: [13308 error 'Default' opID=622892-371bf717] CoreDump: Unable to write minidump [13308 err

The log entry 'Unable to write minidump' combined with 'There is not enough space on the disk' indicates that the local disk of the vCenter Server appliance or Windows host running vCenter has run out of space. The vpxd process attempts to write diagnostic data to its local installation volume on startup and fails when that volume is full, which prevents the service from initializing.

A database space issue would produce SQL or ODBC errors in the log related to database connectivity or transaction failures, not a local minidump write failure.

VMFS volumes are ESXi storage constructs; vCenter Server writes its own logs and minidumps to the OS disk of the machine it runs on, not a VMFS datastore.

ESXi ramdisk is a memory-backed filesystem on ESXi hosts used by the hypervisor itself; vCenter Server is a separate appliance or VM and does not write to ESXi ramdisk.