VERITAS Volume Manager 4.1 Administrator's Guide

Understanding VERITAS Volume Manager
Volume Layouts in VxVM
Chapter 1 23
For example, if there are three columns in a striped plex and six stripe
units, data is striped over the three columns, as illustrated in
Figure 1-15, “Striping Across Three Columns,”
Figure 1-15 Striping Across Three Columns
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 1
• stripe unit 2 in column 2
• stripe unit 3 in column 3
The second stripe consists of:
• stripe unit 4 in column 1
• stripe unit 5 in column 2
• stripe unit 6 in column 3
Plex
Subdisk Subdisk Subdisk
su3su2su1
su4 su5 su6
Column
Column Column
SU = Stripe Unit
123
123
Stripe 1
Stripe 2