HP-UX 11i v3 Installation and Update Guide, September 2010

Disk space requirements for a cold-install
The disk space requirements listed in Table 2-1 (page 11) are estimates only. Requirements might
vary depending on the size of your disk, your type of server, and your Operating Environment.
HP strongly advises you install all OS content on one disk, except for mirrors. That disk must
be at least 20GB.
Note the following:
• The table shows recommended minimums.
• Ignite-UX will enforce absolute minimums, but they are smaller than recommended sizes
in some cases.
• Ignite-UX will consider available root disk space and adjust sizes to be larger.
• The Ignite-UX UI File System tab can be used to set specific sizes.
CAUTION:
If the default size for the /stand partition is too small for your environment, do not use the
lvextend command to increase the size of the /stand partition; doing so might render your
system unbootable. Instead, use a Dynamic Root Disk (DRD) clone to create an inactive copy of
the system on which /stand can be extended, or use Ignite-UX recovery to create a recovery
image and resize the /stand partition.
To use a DRD clone to extend /stand on an LVM-managed system, see the white paper “Dynamic
Root Disk: Quick Start and Best Practices” (http://www.hp.com/go/drd-docs). Further information
on DRD is available at the DRD website: http://www.hp.com/go/drd. See also “Reducing
downtime using Dynamic Root Disk” (page 29).
You can boot from an Ignite-UX recovery image and resize /stand as you recover the system.
For help creating a recovery image, see the Ignite-UX Administration Guide available at the
Ignite-UX website: http://www.hp.com/go/ignite-ux.
Table 2-1 Minimum disk space recommendations
Recommended spacePartition/file system
1 GB
/
1.5 GB
/stand
512MB + swap size
/var
4 GB
/usr
500 MB
/tmp
7 GB
/opt
Depends on application and user requirements. It might
make sense to mount a separate file system at /home.
1
/home
1x - 2x memory size for most systems.
/swap
500 MB
Itanium EFI System (Boot) Partition
400 MB
Itanium HP Service Partition
1
In other words, you might want to put /home on a separate disk and separate volume group. This makes future
recovery and upgrade operations easier. By default, /home is created as a separate file system; however, it is part
of the root volume group.
Disk space requirements for an update
To ensure a successful update to HP-UX 11i v3, make sure that you have at least as much disk
space allocated to the partition/file system listed in Table 2-1 (page 11) and that each partition/file
Determining disk space requirements 11