With the rapid development of cloud computing

big data and Internet applications

datacenters which are regarded as the important infrastructure have also obtained rapid construction and development.Optical interconnect technology which holds the advantages of large capacity

high speed

and low energy has been widely applied to the inter-datacenter networking.With the frequent occurrence of natural disasters and human-made intentional attacks

datacenters and optical datacenter networks are facing an enormous threat.How to design a disaster-resilient optical datacenter network has attracted more and more attention.In this paper

we analysis the current development situation of optical datacenter networks and compare the commonly used survivability technologies.Based on the current situation of optical datacenter networks

we present the development direction of the survivability of the next-generation optical datacenter network.