景安快云服务器管理平台创建备份后有时可能导致硬盘脱机，这个要如何处理呢？几行命令就可以搞定！使用DISKPART.exe命令 解除策略
1.运行：cmd
2.输入：DISKPART.exe
3.DISKPART> san
4.DISKPART> san policy=onlineall
5.DISKPART>list disk
6.DISKPART> select disk 1
7.DISKPART>attributes disk clear readonly
8.DISKPART>online disk
附解决方案英文描述：
open a command prompt and type “diskpart.exe”.
You will now receive a diskpart-prompt:
Diskpart>
Now type “ san”. This will provide you with the current configured SAN policy:
SAN Policy : Offline Shared
In the diskpart-prompt, type “san policy= OnlineAll”.
This will result in the following message:
Diskpart successfully changed the SAN policy for the current operating system.
Now type “ list disk”, which will give this message:
Disk ### Status Size Free Dyn Gpt
Disk 0 Online 30 GB 0 B
Disk 1 Offline 50 GB 1024 KB
In my case, disk 1 was offline so I typed “ select disk 1” which provided:
Disk 1 is now the selected disk
Now type “ attributes disk clear readonly”.
Disk attributes cleared successfully.
And to check if all the settings are now correct, type “ attributes disk”.
This will give an output something like:
Current Read-only State : No
Read-only : No
Boot Disk : No
Pagefile Disk : No
Hibernation File Disk : No
Crashdump Disk : No
Clustered Disk : No
After the last check has been successful, type “ online disk” to bring the disk online.
Diskpart>
Now type “ san”. This will provide you with the current configured SAN policy:
SAN Policy : Offline Shared
In the diskpart-prompt, type “san policy= OnlineAll”.
This will result in the following message:
Diskpart successfully changed the SAN policy for the current operating system.
Now type “ list disk”, which will give this message:
Disk ### Status Size Free Dyn Gpt
Disk 0 Online 30 GB 0 B
Disk 1 Offline 50 GB 1024 KB
In my case, disk 1 was offline so I typed “ select disk 1” which provided:
Disk 1 is now the selected disk
Now type “ attributes disk clear readonly”.
Disk attributes cleared successfully.
And to check if all the settings are now correct, type “ attributes disk”.
This will give an output something like:
Current Read-only State : No
Read-only : No
Boot Disk : No
Pagefile Disk : No
Hibernation File Disk : No
Crashdump Disk : No
Clustered Disk : No
After the last check has been successful, type “ online disk” to bring the disk online.
