Logical Partitioning - Hitachi Compute Blade 2000 User Manual

Logical partitioning

 Dedicated resources and shared resources
Although the LP mode makes it possible to logically partition the hardware resources of a
server blade, the method of logical partitioning varies depending on the hardware
resource.
Some types of logical partitioning are shown in the table below.
Term
Dedicated
Shared Exclusive-
shared
Time-
shared
Logical partitioning of hardware resources
Type of logical partitioning
Description
Either LPAR manager or the particular LPAR to
which a hardware resource has been allocated can
exclusively use the hardware resource. It cannot
be used by LPARs to which it has not been
allocated.
To switch the LPAR that can use resources, make
sure to shut down the LPAR once to change the
configuration definition.
Either LPAR manager or the particular LPAR to
which a hardware resource has been allocated can
exclusively use the hardware resource, but the
LPAR using the resource can be switched
dynamically.
Either LPAR manager or particular LPARs to
which a hardware resource has been allocated
timeshares the resource. LPAR manager keeps
switching LPARs that can use a device at very
short time intervals.
1012
Typical hardware
resources
Processors
Memories
PCI devices
Serial ports
USB devices
Processors
PCI devices