--创建设备
sp_addumpdevice 'disk','device1','c:\bak\device1.bak'

--完全备份
backup database demo
to device1
with name = 'full backup'

--差异备份
backup database demo
to device1
with DIFFERENTIAL,
name='差异1',
description='差异备份',
password='123'

--日志备份
backup log demo
to device2
with name='log1'

--文件/文件组备份
backup database demo
filegroup='primary'
--或
file='演示数据库_data'
to device2
with name='filegroup backup1'

 

   with name='名称',

        description='描述名称'