High availability and disaster preparedness

High availability of SFB role front end and other roles: pool service DNS polling: low cost and reasonable efficiency SFB default highly available recommendation: number of servers in the role pool more than 3 HLB highly available: hardware load balancing devices NLB https://docs.microsoft.com/zh-cn/SkypeForBusiness/certification/infra-load-balancers Edge Server Pool High availability Mediation Server is not supported: media bypass backend High availability (Sql) Sql is recommended Pairing of disaster recovery front-end pools for Server highly available https://docs.microsoft.com/zh-cn/skypeforbusiness/deploy/deploy-high-availability-and-disaster-recovery/deploy-high-availability-and-disaster-recovery SFB: front-end pool synchronization at different sites Achieve remote site disaster recovery branch survival: SBA&SBS through a special device, placed in the branch office, the client of the branch office registered with the device Communicate with the client-front-end server of the central site. The device: All in one-windows server+SFB Standard Edition + PSTN Gateway https://docs.microsoft.com/zh-cn/SkypeForBusiness/certification/infra-sba#qualified-for-skype-for-business-server-2015 Backend database backups must be backed up regularly Ensure the storage space of the data using windows server backup- clipping logs using the backup command of Sql Server itself