HP-UX Virtual Partitions Administrator Guide (includes A.05.07) (5900-1229, September 2010)

Figure 2-2 Software Stack of Server without vPars
HP-UX 11i
Hardware / Firmware
Application 1
Application 2
Using vPars, you can allocate a server’s resources into two or more virtual partitions, each with
a subset of the hardware. In Figure 2-3, two virtual partitions are shown, each with its own boot
disk, its own processor resources, its own LAN connection, and a sufficient subset of memory
to run HP-UX and the applications intended to be hosted on that virtual partition.
Figure 2-3 Server Block Diagram with Two Virtual Partitions
6.0 6.0
Processor
0
Host PCI Bridge
4
SCSI
0/0
LAN
1/0
Memory
(subset)
Host PCI Bridge
5
Processor
1
Processor
2
Processor
3
SCSI
0/0
LAN
1/0
Memory
(subset)
Each application can run on top of a separate OS instance. Instead of a single OS instance owning
all the hardware, the vPars Monitor manages the virtual partitions and each OS instance as well
as the assignment of hardware resources to each virtual partition.
28 How vPars and Its Components Work