ok will try thanks for fast reply.
also here is service log, reboot happened at about 0:04:00
0:03:46.1: Warning: 0 : [FileDuplication] Cannot find any suitable pool part destinations to duplicate \\?\GLOBALROOT\Device\HarddiskVolume21\System Volume Information\ClientRecoveryPasswordRotation. (no more pool parts, or no more unique disks)
0:03:46.1: Information: 0 : [FsControl] Set overall pool mode: PoolModeNoReportIncomplete (lastKey=FileDuplication, pool=5a48cb18-32c1-4703-82dc-3b6a594d5278)
0:08:23.9: Information: 0 : [Rebalance] Setting Background I/O priority
0:08:23.9: Information: 0 : [Rebalance] Cannot balance. Immediate re-balance throttled.