> For the complete documentation index, see [llms.txt](https://huataihuang.gitbook.io/cloud-atlas-draft/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://huataihuang.gitbook.io/cloud-atlas-draft/os/linux/storage/nbd.md).

# 网络块设备(Network Block Device, nbd)

network block device(NBD)驱动使得远程资源看上去就像Linux本地的设备，允许一种廉价和安全的实时镜像构建。