‘Hotadd’ backup proxy virtual machine becomes inaccessible or powered off with the following possible symptoms:
1. Virtual machine randomly stops responding.
2. When guest operating system fails, there is no BSOD or kernel panic.
3. The vmx process of virtual machine fails or is killed by ESXi hypervisior with signal 15.
4. The issue is usually observed during intensive I/O like backup or operations on database.
5. In the proxy VM vmware.log file you see entries similar to:
YYYY-MM-DDT01:26:42Z[+2812.868]| vmx| W110: Caught signal 15 -- tid 8554826 (eip 0x1652538f)