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Partitioning on the basis of volume groups Selected system administrator activities
Figure 27: Example of partitioning on the basis of volume groups
4.1.2 Rules
Logical volume groups:
– It is possible to configure up to 512 logical volume groups.
By default, CentricStor always has at least two logical volume groups (“BASE”
and “TR-LVG“). These are available in addition to the freely configureable
volume groups.
– Each logical volume in CentricStor belongs to precisely one logical volume group.
You have two different systems (a BS2000
host and a UNIX system) using CentricStor
in conjunction with an archive system. By
grouping volumes, it is hoped to achieve a
situation where BS2000 data and UNIX
data are stored on different physical
volumes.
The logical volumes of the BS2000 host are
assigned to the logical volume group LVG1,
while those of the UNIX system are
assigned to the logical volume group LVG2.
These logical volumes can (but need not
necessarily) be assigned to various physical
volume groups.
As a result of these assignments, BS2000
data will now be stored on the physical
volumes PV0001 through PV0300, while
UNIX files will be stored on the physical
volumes PV0501 through PV0600.
CentricStor
PV0001
PV0002
PV0003
...........
PV0300
PVG1
PV0501
PV0502
PV0503
...........
PV0600
PVG2
Archive
BS2000
data
UNIX
Data
BS2000 host
UNIX system
LV0001
LV0002
LV0003
...........
LV3000
LVG1
LV3001
LV3002
LV3003
...........
LV6000
LVG2
i