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2005-10-17 17:17:51
三种RAID-0卷分别是：
stripe volumes
concatenation volumes
concatenation stripe volumes
可以将stripe卷看成并联输入数据的方式，将concatenation卷看成串连输入数据的方式
RAID-0卷允许快速简便的扩充磁盘容量，缺点是这些卷不提供数据冗余.如果RAID-0卷中的一个组件发生问题，所有的数据都会丢失
可以在除了/、/usr、swap、/var、/opt文件系统之外的任何文件系统上使用RAID-0卷
当创建一个stripe卷，必须设定interlace的值或者使用solaris卷管理器的默认interlace值－16Kbytes.一旦创建了stripe卷，就不能改变它的值.然而，可以通过备份上面的数据，删除stripe卷，创建一个新的stripe卷和新的interlace值，并恢复数据这样的方法来更改interlace值
当工作在RAID-0卷的时候，要考虑下面的注意事项：
1，use components that are each on different controllers to increase the number of simultaneous reads and writes that can be performed
2,do not create a stripe from an existing file system or data. doing so will destroy data. instead,use a concatenation.
3,use disk components of the same size for stripes. striping components of diffenent sizes results in wasted disk space
4,set up a stripe's interlace value to better match the I/O requests made by the system or applications
5,because a stripe or concatenation does not contain replicated data, when such a volume has a component failure, you must replace the component, recreate the stripe or concatenation, and restore data from a backup
6,when you recreate a stripe or concatenation, use a replacement component that has at least the same size as the failed component
