VERITAS Storage Foundation 4.1 Cluster File System HP Serviceguard Storage Management Suite Extracts, December 2005

Chapter 2, Installing and Configuring
Creating a Dynamic (Shared) Volume
37
Concatenated
A concatenated volume consists of one or more regions of the specified disks. You have
the option of placing a file system on the new volume or mirroring the volume. You can
create a regular concatenated volume or a concatenated pro volume. A concatenated pro
volume is layered and mirrored.
Layout: Choose Concatenated or Concatenated Pro for the volume
layout.
Options:
- To mirror the volume, select Mirrored. In the Total Number of
Mirrors field, enter the total number of mirrors for the volume.
Note Concatenated pro volumes are mirrored by default.
To enable logging for a mirrored volume, select
Enable
Logging
.
- To place a cluster file system on the volume, click Mount File
System Detail
, specify the VxFS file system type, and add the
name of the cluster mount.
- To clear the volume before enabling it for general use, select
Initialize Zero.
- To prevent the creation of a layered volume, select No
Layered Volumes
. In cases where a layered volume layout is
appropriate, VxVM can create a layered volume when a
non-layered layout is specified. This option ensures that the
volume has a non-layered layout. If a layered (Pro) layout is
selected, this option is ignored.
Notes
If no disks are assigned, VxVM uses available space on disks in the selected disk group.
The data in a concatenated volume is not protected against disk failure unless the volume is
mirrored. At least one additional disk is required to mirror a concatenated volume.
Concatenated pro volumes are mirrored by default, so a concatenated pro volume requires
more disks than an unmirrored concatenated volume.
You cannot use a concatenated pro volume for a root volume.
You cannot use a concatenated pro volume for a swap volume.