景安快雲伺服器管理平台建立備份後有時可能導緻硬碟脫機，這個要如何處理呢？幾行指令就可以搞定！使用DISKPART.exe指令 解除政策
1.運作：cmd
2.輸入：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
附解決方案英文描述：
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.