Khôi phục thảm họa Khôi phục thảm họa là một quá trình và thủ tục liên quan để chuẩn bị cho việc phục hồi hoặc tiếp tục cơ sở hạ tầng công nghệ trong trường hợp các trang web chính nơi mà cơ sở hạ tầng được quy định là bị mất do thiên tai hoặc sự kiện một số khác, làm cho trang web đó không có sẵn để tiếp tục phục vụ người dùng. | 324 CHAPTER 12 CONFIGURING SHAREPOINT 2010 FOR HIGH AVAILABILITY BACKUPS FIGURE 12-12 This section provided the basic information required to understand the methods to both successfully protect and recover content from corruption accidental deletion or other loss scenarios. If your organization has service-level agreements targeted specifically at content recovery scenarios you should evaluate all of the options presented here and through planning and practice combine these strategies with your overall business continuity requirements while keeping in mind that although content comprises the majority of information accessed in SharePoint its protection alone does not provide an adequate disaster-recovery or high-availability solution. Testing is imperative to help you make an informed decision about which solution or combination of solutions should be implemented to protect your content. DISASTER RECOVERY Disaster recovery is the process and procedures related to preparing for recovery or continuation of technology infrastructure in the event that the primary site where that infrastructure is provided Disaster Recovery 325 is lost due to natural disaster or some other event making that site unavailable to continue serving users. Disaster recovery processes and procedures are commonly guided by two principles Recovery point objective RPO RPO is a critical value when planning a business continuity solution and is impacted by factors such as restore duration from backup and replication performance. Recovery time objective RTO RTO is important as it dictates the total amount of time required to bring the service back online. It should be mapped to any operating-level agreements established with ancillary technologies such as Directory Services or network infrastructure as these services will commonly need to be available before you can offer your service to users. It is equally important to understand that any reduction in RPO and RTO objectives will often increase the
