浅谈网络块设备的弹性扩容

Discussion on the elastic expansion using Network Block Device

近些年各个领域的数据都出现爆炸性的增长,而市面上为用户提供的存储服务也越来越多,但大多数存在存储容量受限,增加容量时价格昂贵,灾备空间有限等问题。文章研究了Linux的一个内核模块Network Block Device(NBD),并利用NBD来实现远程存储设备在本地服务器上的弹性挂载,从而实现本地服务的弹性扩容。

In recent years,the data in various fields are explosively increased,and the storage services available for users have being more and more,but most of them have the problems of limited storage capacity,high price when increasing capacity,limited disaster recovery space and so on.This paper studies Network Block Device(NBD),a kernel module of Linux,and uses NBD to realize the elastic mounting of remote storage devices on local servers,so as to realize the elastic expansion of local services.