When restoring the OS of the cluster servers, sometime the cluster disk will becomes reserved / RAW.
Do the following to release the cluster reservation.
1) Install the cluster feature
2) find the disk number on the disk manager
3) Run powershell with administrator right, clear-clusterdiskreservation -disk 2
4) Remove the cluster feature when finish
本文转自学海无涯博客51CTO博客，原文链接http://blog.51cto.com/549687/2078562如需转载请自行联系原作者
520feng2007
