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. Consider allocating space for the following
conditions, depending on your needs.
Table 4-3 General Disk Space and Swap Space Planning
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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 only available 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.
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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 the
swap space, see Chapter 19, 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 |
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Language support |
For example, Chinese, Japanese, or Korean. 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 all language supports,
you need to allocate up to approximately 2.5 GB of additional
disk space for the language supports, depending on the software group
you install. |
Printing or mail support |
Allocate additional space. |
Additional software or third-party software |
Allocate additional
space. |
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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.
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For an initial installation, you select the software group to install, based on the functions that you want to perform on the system.
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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 4-1 Oracle Solaris Software Groups
Table 4-4 lists the Oracle Solaris software groups and the recommended amount of disk
space that you need to install each group.
Note - The disk space recommendations in Table 4-4 include space for the following items.
You might find that the software groups require less disk space than the
amount that is listed in this table.
Table 4-4 Disk Space Recommendations for Software Groups
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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 a 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 |
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