Abstract: Continuous data protection technology is an important method to reduce the damage of enterprise data. As per I/O capacity of backup, storage space becomes the main factors that limit the length of the CDP effective backup time. However, for most applications, the peak is not very commonly, serious waste of storage resources. This paper takes traditional sliding window mechanism as the foundation to optimize the window automatically adjust based on the I/O load changes, effectively improve storage resource utilization, so that users can take advantage of limited resources, in most cases, they have better data protection. The experiments show that the program not only improves the utilization of the backup disk, but also reduces the maximum data loss data recovery.
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Key words: CDP, sliding window, space utilization, automatic adjustment, RPO