Allocating Disk and Swap Space
Before you install the Oracle Solaris software, you can determine if your system
has enough disk space by doing some high-level planning.
General Disk Space Planning and Recommendations
Planning disk space is different for everyone. The following table lists some conditions
and considerations for allocating space.
Table 3-2 General Disk Space and Swap Space Planning
|
|
For UFS file systems |
For each file system that you create,
allocate an additional 30 percent more disk space than you need to enable
you to upgrade to future Oracle Solaris versions. By default, the Oracle Solaris
installation methods create only root (/) and /swap. When space is allocated for OS
services, the /export directory is also created. If you are upgrading to a
major Oracle Solaris release, you might need to reslice your system or allocate
double the space that you need at installation time. If you are upgrading
to an update, you could prevent having to reslice your system by allocating
extra disk space for future upgrades. An Oracle Solaris update release needs approximately
10 percent more disk space than the previous release. You can allocate an
additional 30 percent of disk space for each file system to allow space
for several Oracle Solaris updates.
Note - In previous Solaris releases, you could not install
and boot the Oracle Solaris OS from a disk that was greater than
1 TB in size. Starting with the Oracle Solaris 10 10/09 release, you can install and boot the Oracle Solaris
OS from a disk that is up to 2 TB in size. Starting with the Solaris 10 10/09 release, you
can use the VTOC label on a disk of any size, but the
addressable space by the VTOC is limited to 2 TB. This feature
allows disks that are larger than 2 TB to be used as boot
drives, but the usable space from the label is limited to 2 TB. This
feature is available only on systems that run a 64-bit kernel. A minimum
of 1 GB of memory is required for x86 based systems. For detailed information,
see Two-Terabyte Disk Support for Installing and Booting the Oracle Solaris OS in System Administration Guide: Devices and File Systems.
|
The /var file system for UFS file systems |
If you intend
to use the crash dump feature savecore(1M), allocate double the amount of your
physical memory in the /var file system. |
Swap |
For UFS file systems, the Oracle Solaris installation
program allocates a default swap area of 512 MB under the following conditions:
By
default, the Oracle Solaris installation programs allocate swap space by placing swap so
that it starts at the first available disk cylinder (typically cylinder 0 on
SPARC based systems). This placement provides maximum space for the root (/)
file system during the default disk layout and enables the growth of
the root (/) file system during an upgrade. If you think you might
need to expand the swap area in the future, you can place the
swap slice so that it starts at another disk cylinder by using one
of the following methods:
For an overview of swap space, see Chapter 16, Configuring Additional Swap Space (Tasks), in System Administration Guide: Devices and File Systems. |
A server
that is providing home directory file systems |
By default, home directories are usually
located in the /export file system. |
The Oracle Solaris software group you are installing |
A
software group is a grouping of software packages. When you are planning disk
space, remember that you can add or remove individual software packages from the
software group that you select. For information about software groups, see Disk Space Recommendations for Software Groups. |
Upgrade |
|
Language
support |
If you plan to install a single language, allocate approximately 0.7 GB of
additional disk space for the language. If you plan to install
support for all languages, you need to allocate up to approximately 2.5
GB of additional disk space depending on the software group you install. |
Printing
or mail support |
Allocate additional space. |
Additional software or third-party software |
Allocate additional space. |
|
Disk Space Recommendations for Software Groups
The Oracle Solaris software groups are collections of Oracle Solaris packages. Each software
group includes support for different functions and hardware drivers.
-
For an initial installation, you select the software group to install based on the functions that you want to perform on the system.
-
For an upgrade, you must upgrade to a software group that is installed on the system. For example, if you previously installed the End User Oracle Solaris Software Group on your system, you cannot use the upgrade option to upgrade to the Developer Oracle Solaris Software Group. However, during the upgrade, you can add software to the system that is not part of the currently installed software group.
When you are installing the Oracle Solaris software, you can choose to add
or remove packages from the Oracle Solaris software group that you selected.
When you are selecting which packages to add or remove, you need to
know about software dependencies and how the Oracle Solaris software is packaged.
The following figure shows the grouping of software packages. Reduced Network Support contains
the minimal number of packages and Entire Oracle Solaris Software Group Plus OEM
Support contains all the packages.
Figure 3-1 Oracle Solaris Software Groups
Table 3-3 lists the Oracle Solaris software groups and the recommended amount of disk
space that you need to install each group. The disk space recommendations in
the table include space for the following items:
You might find that the software groups require less disk space than the
amount that is listed.
Table 3-3 Disk Space Recommendations for Software Groups
|
|
|
Entire Oracle Solaris Software Group Plus
OEM Support |
Contains the packages for the Entire Oracle Solaris Software Group plus additional
hardware drivers, including drivers for hardware that is not on the system at
the time of installation. |
8575 MB |
Entire Oracle Solaris Software Group |
Contains the packages for
the Developer Oracle Solaris Software Group and additional software that is needed for
servers. |
8529 MB |
Developer Oracle Solaris Software Group |
Contains the packages for the End
User Oracle Solaris Software Group plus additional support for software development. The additional
software development support includes libraries, include files, man pages, and programming tools. Compilers are
not included. |
8336 MB |
End User Oracle Solaris Software Group |
Contains the packages that provide
the minimum code that is required to boot and run a networked Oracle
Solaris system and the Common Desktop Environment. |
7074 MB |
Core System Support Software Group |
Contains
the packages that provide the minimum code that is required to boot and
run a networked Oracle Solaris system. |
3093 MB |
Reduced Network Support Software Group |
Contains the
packages that provide the minimum code that is required to boot and run
an Oracle Solaris system with limited network service support. The Reduced Network Support
Software Group provides a multiuser text-based console and system administration utilities. This
software group also enables the system to recognize network interfaces, but does
not activate network services. |
3035 MB |
|