HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Administrator& - Page 80
Creating a Common Provisioning Group, Setting Snapshot Space Usage Warnings
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Creating a Common Provisioning Group • To create a CPG, issue the createcpg -aw -sdgs -sdgl -sdgw -t command, where: ◦ -aw is the percentage of used snapshot space and administration space that will generate a warning alert. If 0 (default) is specified, alert generation is disabled. ◦ -sdgs is the amount of LD storage created during each autogrow operation. For the minimum default growth sizes per number of nodes, see Table 6 (page 78). ◦ -sdgl is the growth limit which cannot be exceeded during autogrow operations. If 0 (default) is specified, no limit is enforced. ◦ -sdgw is the space limit for LD space before a warning alert is generated. If 0 (default) is specified, no warning limit is enforced. ◦ -t is the RAID type, specified as r0 (RAID 0), r1 (RAID 1), r5 (RAID 5), or r6 (RAID MP). ◦ is the name of the CPG being created. If no RAID type is specified with the -t option, the default is RAID 1 for Fast Class (FC or SAS) and SSD device types, and RAID 6 for NL device types. HP strongly recommends using RAID 6 for NL device types. If you want to use RAID 5 for NL device types, you must first change the setsys AllowR5OnNLDrives value to yes (the default is no). For a complete list of options available for the createcpg command, see the HP 3PAR Command Line Interface Reference and the HP 3PAR CLI Help. Modifying a Common Provisioning Group The following modifications are commonly performed on CPGs using variations of the setcpg command: • Specify the percentage of administration space or snapshot space that is used before an alert is generated. • Specify the amount of LD space created with each auto-grow operation. For a complete list of options available for the setcpg command, see the HP 3PAR Command Line Interface Reference and the HP 3PAR CLI Help. Setting Snapshot Space Usage Warnings To set or modify the space usage warning for a CPG, issue the setcpg -sdgw command, where: • -sdgw is the space limit for LD space before a warning alert is generated. If 0 (default) is specified, no warning limit is enforced. • is the name of the CPG being created. Setting a Common Provisioning Group's Autogrow Size NOTE: Before modifying your CPG's autogrow settings, see "Growth Increment Considerations for Common Provisioning Groups" (page 78) for guidelines. 80 Managing CPGs and Virtual Volumes