问题：There are offline or missing virtual drives with preserved cache.

virtual drives with preserved cache."/>

问题：There are offline or missing virtual drives with preserved cache.

问题：There are offline or missing virtual drives with preserved cache.
Please check the cables and ensure that all drives are present.
Press any key to enter the configuration utility.
解决方法：
服务器重启默认进入以下页面选择 PERC H730 Mini (Bus 0x02, Dev 0X00) 按F2

按F2之后选择
Manage Preserved Cache
选中之后回车进去然后按
discard the cache
按完之后会提示YES or NO 选择YES
Ctrl+Alt+Del 重启服务器
重启服务器之后会出现以下问题：

解决办法

查看/etc/fstab是否正确
之后重启
systemctl reboot

附：DELL官方对此问题的一些说明：

Error Message：There are offline or missing virtual drives with preserved cache.Please check the cables and ensure that all drives are present.Press any key to enter the configuration utility.

Probable Cause：The controller preserves the dirty cache from a virtual disk if the disk becomes offline or is deleted because of missing physical disks.

This preserved dirty cache is called pinned cache, and is preserved until you import the virtual disk, or discard the cache.

Corrective Action：Use the utility to import the virtual disk or discard the preserved cache. For the steps used to manage preserved cache, see Managing Preserved Cache.