Installing and Managing HP-UX Virtual Partitions (A.02.01)

Planning Your Virtual Partitions and Installing vPars
Planning Your Virtual Partitions
Chapter 470
• The maximum number of virtual partitions can be limited by the
total size of the kernels in memory for all the virtual partitions. In
general terms, the sum of the size of the kernels must be < 2 GB.
If you use the defaults of the dynamic tunables, you will not run into
the 2 GB limit. However, if you have adjusted the dynamic tunables,
it is possible to run beyond the 2 GB boundary. You can perform the
calculations described in the appendix “Calculating the Size of
Kernels in Memory” on page 167.
For more information on dynamic tunables, see the white paper
Dynamically Tunable Kernel Parameters in HP-UX 11i at
http://docs.hp.com.
Maximum Number of Cells per nPartition
When using vPars within an nPartition, the maximum number of cells
assigned to the nPartition should be no greater than 8.
Also, all cells of the nPartition must reside in the same cabinet.
Virtual Partition Names
All virtual partitions must be given text names that are used by the
vPars commands. The names can consists of only alphanumeric
characters and periods (’.’). The maximum length of a name is 239
characters.
HP recommends using the corresponding hostnames for virtual partition
names, but they are not internally related.
For our example server, we have chosen the names of our virtual
partitions to be winona1, winona2, and winona3:
Although the underscore (_) is a legal character within the name of a
virtual partition, it is not a legal character within the Domain Name
System (DNS) and should not be used.
Partition
Name
winona1 winona2 winona3