sqlserver 2017 还原遇到报错The operating system returned the error ‘21(设备未就绪。)‘
环境：windows 2016 + sqlserver 2017备份时正常，还原时一直卡在下面的界面不动查看日志发现两个报错The operating system returned the error '21(设备未就绪。)' while attempting 'GetDiskFreeSpace' on 'Z:\'.The operating system retu...
