VERITAS Volume Manager 3.5 User's Guide - VERITAS Enterprise Administrator (June 2002)

Creating a Dynamic Volume
86 VERITAS Volume Manager User’s Guide - VEA
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 file system on the volume, click Create a file
system and specify the file system type and mount point in
the New File System dialog box.
- 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 caseswhere alayeredvolume 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.
- If your system supports root volumes, then it should be noted that you cannot use a
concatenated pro volume for a root volume.
- You cannot use a concatenated pro volume for a swap volume.
- If afilesystem is placed on the volume andthe Mount at Boot option isselected,the file
system table file automatically updates.