Originally Posted by sanseo
i as my knowledge, In cloud hosting no worried about servers down.
is this right, If not please share some interesting details
if the cloud product features high availability, then you will have an extra layer of protection from downtime. if the physical host on which your cloud server resides happens to fail, then the cloud server will migrate to another physical host and reboot. the cloud server will be down for a minute or so while it reboots.
if you have fault tolerance, then you will not suffer any downtime at all. with fault tolerance, you have 2 identical VMs running lockstep on 2 different physical hosts. if one host fails, then the other one is already there for instant failover. fault tolerance is usually an expensive option since it requires double the amount of cloud servers to run your services.