Data backup method and device, data recovery method and device and computer equipment

The invention discloses a data backup method and device, a data recovery method and device and computer equipment, and relates to the technical field of computers and the Internet. The data backup method comprises the steps of determining to-be-backed-up data; determining failure rates of at least two storage media which can be used for storing the to-be-backed-up data; determining a target storage medium allocated to the to-be-backed-up data under the fault rate through a preset allocation rule; and backing up the data to be backed up by utilizing the target storage medium. Therefore, the backup scheme can be dynamically determined based on the failure rate and the preset allocation rule, namely, the number of the backup copies can be dynamically adjusted, so that the number of the copies is more reasonable, and waste of storage resources is avoided. 本申请公开了一种数据备份、数据恢复的方法、装置及计算机设备，涉及计算机和互联网技术领域。数据备份方法包括：确定待备份数据；确定可用于存储待备份数据的至少两个存储介质的故障率；通过预设分配规则，确定在该故障率下分配给待备份数据的目标存储介质；利用目标存储介质，对待备份数据进行备份。这样，可以基于故障率及预设分配规则，动态