2. Tune the user space of the volume by issuing the tunevv usr_cpg <CPG_name>
<volume_name> command, where:
• usr_cpg <CPG_name> is the name of the CPG created previously in Step 1, indicating
the user space of the new CPG will be used.
• <volume_name> is the fully-provisioned virtual volume you are modifying.
3. Tune the snapshot space of the volume by issuing the tunevv snp_cpg <CPG_name>
<volume_name> command:
• snp_cpg <CPG_name> indicates the CPG to where the snapshot space is moved.
• <volume_name> is the fully-provisioned virtual volume you are modifying.
Changing Virtual Volume Fault-Tolerance Levels
Thinly-Provisioned Virtual Volumes
To change the volume fault-tolerance level of a TPVV, perform the following:
1. Create a new CPG with the desired fault-tolerance level and RAID type. See “Creating a
Common Provisioning Group” (page 80) for instructions.
2. Change the TPVV’s fault-tolerance level by issuing the tunevv usr_cpg <CPG_name>
<TPVV_name> command, where:
• usr_cpg <CPG_name> is the name of the CPG created previously in Step 1.
• <TPVV_name> is the TPVV you are modifying.
Fully-Provisioned Virtual Volumes
To change the volume fault-tolerance level of a fully-provisioned virtual volume, perform the following:
1. Create a new CPG with the desired fault-tolerance level and RAID type. See“Creating a
Common Provisioning Group” (page 80) for instructions.
2. Change the fully-provisioned virtual volume’s fault-tolerance level by issuing the tunevv
usr_cpg <CPG_name> <volume_name> command, where:
• usr_cpg <CPG_name> is the name of the CPG created previously in Step 1.
• <volume_name> is the fully-provisioned virtual volume you are modifying.
3. Tune the snapshot space of the volume by issuing the tunevv snp_cpg <CPG_name>
<volume_name> command:
• snp_cpg <CPG_name> indicates the CPG to where the snapshot space is moved.
• <volume_name> is the fully-provisioned virtual volume you are modifying.
Changing Virtual Volume Parameters
Thinly-Provisioned Virtual Volumes
To change the parameters of a TPVV, perform the following:
1. Create a new CPG with the parameters you wish to apply to the volume. See “Creating a
Common Provisioning Group” (page 80) for instructions.
2. Issue the tunevv usr_cpg <CPG_name> <TPVV_name> command, where:
• usr_cpg <CPG_name> is the name of the CPG created previously in Step 1.
• <TPVV_name> is the TPVV you are modifying.
Fully-Provisioned Virtual Volumes
To change the parameters of a fully-provisioned virtual volume, perform the following:
176 Performance Tuning
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