Hardware manual

Group Administration Basic volume operations
9–5
Displaying group-wide default volume settings
When you create a volume or enable thin provisioning on a volume, group-wide defaults are applied, unless you
explicitly override them for a volume. These default values control snapshot space, snapshot behavior, thin
provisioning space, and iSCSI alias naming.
To display group-wide default
volume settings, click Group, then Group Configuration, and then the
Defaults tab. The Group Configuration – Defaults window appears, displaying the information about the default
volume settings. You can change the default volume settings. See Modifying group-wide volume settings.
The Group Configuration – Defaults window
provides the following information:
• Space allocation percentages.
• Space management policies for snapshot retention and
placing the volume offline.
• iSCSI identifiers and volume name use.
You can change a setting for an existing volume. S
e
e the online help for information about the data fields and
options. See also Volume attributes on page 9
-3.
Modifying group-wide volume settings
When you create or enable thin provisioning on a volume, the group applies defaults, unless you explicitly override
them for a volume. These defaults control snapshot space, snapshot behavior, thin provisioning space, and iSCSI
alias naming. See Displaying group-wide default volume settings on
page 9-5.
You can modify the group-wide default values to meet the needs of your configuration.
Note: Changes to the group-wide default values apply only to new volumes.
T
o modify group-wide volume settings:
1. Click
Group, then Group Configuration, and then the Defaults tab.
2. In the Group Defaults window, change the default settings.
3. Click
Save all changes (Control+S).
Creating standard volumes
To provide storage space to end users, you create standard volumes that users can then access from host computers.
Before you create a standard volume, you need to understand:
• Volume attributes and group-wide default settings the group apply to a volume. See Volume attributes on page
9-3 and
Displaying group-wide defaul
t volume settings on page 9-5.
• Volume security and access controls. See iSCSI target security.
• Risks and benefits associated with thin provisioning before applying
this functionality to a volume. See About
thin provisioning.