Managing Systems and Workgroups: A Guide for HP-UX System Administrators

Administering a System: Managing Disks and Files

Managing File Systems

Chapter 6628

Creating and Modifying Mirrored Logical Volumes

You can conﬁgure mirroring by using either SAM or HP-UX commands.

Whenever possible, use SAM.

Using SAM SAM will perform the following mirroring set-up and conﬁguration

tasks:

• Creating or removing a mirrored logical volume.

• Conﬁguring or changing the characteristics of a logical volume’s

mirrors. You can specify:

— the number of mirror copies.

— strict (including choice of using separate physical volume groups)

vs. nonstrict allocation.

— the Mirror Write Cache or the Mirror Consistency Recovery

method.

— parallel, sequential, or dynamic scheduling policy.

— contiguous allocation vs. noncontiguous allocation.

NOTE The logical volume feature in SAM related to mirroring will not function

unless the MirrorDisk/UX subsystem has been added to the system.