exchange2010的一个数据库状态变为 fail&suspended ，数据库的状态信息如下
The database copy was automatically suspended due to failure item processing. At '2017/1/12 4:32:09' the Exchange store database 'SAC-MBX04 (R&D)' copy on this server experienced a serious I/O error. For more details about the failure, consult the Event log on the server for other storage and "ExchangeStoreDb" events. The passive database copy has been suspended.

The Microsoft Exchange Replication service encountered an unexpected error in log replay for database 'SAC-MBX04 (R&D)\SAC-S-MAIL01'. Error MapiExceptionJetErrorDiskIO: LogReplayRequest rpc failed. (hr=0x80004005, ec=-1022)
Diagnostic context:
Lid: 47917
Lid: 64301 StoreEc: 0xFFFFFC02
求高人指点。