Abstract: In order to improve the security performance of backup university data and reduce the loss caused by system damage or data loss in colleges and universities，a unified disaster recovery backup technology is proposed． Firstly，it is clear that data backup is the key of unified disaster recovery technology． The real-time detection of the state of the target system is carried out through heartbeat and checkpoint technology． Secondly，information is partitioned in the process of data backup in colleges and universities，and each part is supported by a thread． The transmission is completed according to the corresponding network protocol． While the accuracy and completeness of data are guaranteed，backup is greatly improved． Finally，through the quantitative processing of resources，data fault analysis and algorithm optimization，the performance of the unified disaster recovery backup technology is further improved to better meet the data security needs of colleges and universities． The test results show that the application of unified disaster recovery backup technology in the data security protection of colleges and universities can maximize the integrity and security of data，and has high application and promotion value in the data security of colleges and universities．

Key words: data loss, disaster recovery backup technology, checkpoint technology, data allocation