3PAR InForm® OS 2.2.4 CLI Administrator's Manual (320-200113 Rev A, March 2009)

7.12
Common Provisioning Groups
3PAR InForm OS CLI Administrator’s Manual InForm OS Version 2.2.4
In order to take full advantage of CPG functionality, it may be desirable in some cases to use a
larger growth increment. However, a smaller growth increment carries less risk in that it can
prevent the CPG from automatically allocating a large amount of space at an inopportune
time.
The growth increment you choose will depend on several factors including but not limited to
the following:
 Total available space on your system.
 Nature of the data running on the system.
 Number of CPGs in the system.
 Number of volumes associated with those CPGs.
 Anticipated growth rate of the volumes associated with the CPG.
For detailed information about CPG growth increment limits, warnings, and alerts, see the
3PAR InForm Concepts Guide.
7.10.2 Creating a Common Provisioning Group
X To create a CPG, issue the createcpg -aw <percent> -sdgs <size> -sdgl <size>
-sdgw <size> -t <RAID_type> <CPG_name>
command, where:
 -aw <percent> is the percentage of used snapshot administration or snapshot data
space that will generate a warning alert. If 0 (default) is specified, alert generation is
disabled.
 -sdgs <size> is the amount of logical disk storage created during each autogrow
operation. Refer to Table 7-1 on page 7.11 for the minimum default growth sizes per
number of nodes.
 -sdgl <size> is the growth limit which cannot be exceeded during autogrow
operations. If 0 (default) is specified, no limit is enforced.
 -sdgw <size> is the space limit for logical disk space before a warning alert is
generated. If 0 (default) is specified, no warning limit is enforced.
 -t <RAID_type> is the RAID type, specified as r0 (RAID 0), r1 (RAID 1), or
r5 (RAID 5).
 <CPG_name> is the name of the CPG being created.