olume Shadow Copy Service error: Unexpected error calling routine IOCTL_DISK_SET_SNAPSHOT_INFO(\\.\PHYSICALDRIVE19) fails with winerror 1167. hr = 0x8007048f, The device is not connected

I am trying to create a snapshot on my lun from a storage array on windows 2008 R2. From a diskshadow create command on windows 2008 runs the luns are intermittently disappearing from the host.

Can someone help resolving this issue