Technical information

2
RAID overview
Exhibit 1-1 A graphical representation of data storage in RAID configurations.
◗ Each cylinder represents a
separate physical drive.
◗ Each physical drive has been
divided into partitions, labeled
logical partition (LP)
◗ Physical Drive 4 has been
initialized and is empty with no
partitions or data. This volume
can be used to create either a
standard or a striped volume.
◗ LP7 and LP11 are free
partitions that can be used to
create standard or striped
volumes.
◗ Data has been striped (RAID
Level 0) across physical drives
1, 2 and 3, using partitions
LP1, LP 2 and LP3, named Volume 1. LP4, LP5 and
LP6 are also examples of striping data across three
separate physical drives into Volume 2.
◗ LP8 is a standard volume using one partition.
◗ LP9, LP 10, LP12, LP 13 and LP14 are also standard
volumes.
Note: If you create a striped volume across multiple
physical drives and the partitions are not the same
size, you will only be able to use the portion of each
partition equal to the size of the smallest partition,
leaving unused and inaccessible space on the larger
partitions in the volume.