HP-UX System Administrator's Guide: Logical Volume Management (762803-001, March 2014)

1
The limit of 2048 volume groups is shared among Version 2.x volume groups. Volume groups of Versions 2.x can be
created with volume group numbers ranging from 0-2047. However, the maximum number of Version 2.0 volume groups
that can be created is 512.
2
For volume group Version 2.2 or higher, the total number of logical volumes includes normal logical volumes as well as
snapshot logical volumes.
Table 15 Version 1.0 Volume Group Limits
Maximum ValueDefault ValueMinimum ValueCommand to Set/Change
Parameter
Parameter
256n/a0n/aNumber of volume groups
on a system
255161vgcreate –p max_pv
vgmodify –p max_pv
Number of physical volumes
in a volume group
2552551vgcreate –l max_lv
vgmodify –l max_lv
Number of logical volumes
in a volume group
2 TBLUN Capacity1 PEpvcreate –s pv_sizeSize of a physical volume
16 TB00lvcreate –L lv_size
lvextend –L lv_size
Size of a logical volume
256 MB4 MB1 MBvgcreate –s pe_sizeSize of a physical extent
32 MB8 KB4 KBlvcreate –l
stripe_size
Size of a stripe
Number of
PVs in VG
n/a2lvcreate –i stripesNumber of stripes
6553500lvcreate –l max_le
lvextend –l max_le
Number of logical extents
per logical volume
655351016
1
1vgcreate –e max_pe
vgmodify –e max_pe
Number of physical extents
per physical volume
200lvcreate –m copies
lvextend –m copies
Number of mirror copies
(MirrorDisk/UX product
required)
1
If more than 1016 extents are necessary to access all of the first physical volume in the volume group, vgcreate
increases the default value to the size of the first physical volume divided by the physical extent size.
160 LVM Specifications and Limitations