Use offsets to create multiple chunks
You can create multiple chunks from a disk partition, disk device, or file, by specifying offsets and assigning chunks that are smaller than the total space available.
The offset specifies the beginning location of a chunk. The database server determines the location of the last byte of the chunk by adding the size of the chunk to the offset.
For the first chunk, assign any initial offset, if necessary, and specify the size as an amount that is less than the total size of the allocated disk space. For each additional chunk, specify the offset to include the sizes of all previously assigned chunks, plus the initial offset, and assign a size that is less than or equal to the amount of space remaining in the allocation.