Before you upgrade an ESX host what should you do?
A. back up /proc, /mnt, /tmp, custom scripts and all VMFS datastores
B. back up /home, /etc/init.d and /boot
C. back up /etc/passwd, /etc/groups, /etc/shadow, /etc/gshadow, custom scripts and local VMFS
D. back up /var/logs, /usr, /bin and the dmesg output
Answer: C
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