Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Figure 1-14
Striping across three columns
Stripe 1
Plex
Column 0 Column 1
stripe unit
2
stripe unit
1
Column 2
Subdisk
1
Subdisk
2
Subdisk
3
stripe unit
3
stripe unit
5
stripe unit
4
stripe unit
6
Stripe 2
A stripe consists of the set of stripe units at the same positions across all columns.
In the figure, stripe units 1, 2, and 3 constitute a single stripe.
Viewed in sequence, the first stripe consists of:
■ stripe unit 1 in column 0
■ stripe unit 2 in column 1
■ stripe unit 3 in column 2
The second stripe consists of:
■ stripe unit 4 in column 0
■ stripe unit 5 in column 1
■ stripe unit 6 in column 2
Striping continues for the length of the columns (if all columns are the same
length), or until the end of the shortest column is reached. Any space remaining
at the end of subdisks in longer columns becomes unused space.
Figure 1-15 shows a striped plex with three equal sized, single-subdisk columns.
Understanding Veritas Volume Manager
Volume layouts in VxVM
42