HP 3PAR OS 3.1.3 Command Line Interface Reference

NOTES
• For this command:
KB = 1024 bytes◦
◦ MB = 1048576 bytes
◦ GB = 1073741824 bytes
• When using the createcpg command, the size of the logical disk space created is the first
integer multiple of the RAID set size that is large enough to accommodate the requested virtual
volume size. For example, with the default RAID-5 layout with a set size of 768 MB, a requested
virtual volume size of 8192 MB causes the creation of logical disks with a total size rounded
up to an integer multiple of 768 that is 8448 MB. The growth increment of CPGs is similarly
rounded up because the growth is done by creating logical disks that must be created in units
of the logical disk RAID set size. See the HP 3PAR StoreServ Storage Concepts Guide for
further details.
• By default, logical disk are created using only physical disks with the same device type. (By
default, the Fibre Channel device type is used). Use the –p devtype NL or -p -devtype
SSD option to override this default. Use the showpd command to see the device types of
physical disks in the system.
• The options -sdgs, -sdgl and -sdgw control the auto logical disk creation for the Common
Provisioning Group's (CPG) snapshot data regions. Auto logical disk creation occurs when
the amount of free logical disk space falls below the specified grow (enlarge) size setting
options (-sdgs, -sdgl).
• If no device type is specified using the –p –devtype option, Fibre Channel is assumed.
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