Allocating Disk and Swap Space
Before you install the 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 Solaris versions. By default, the 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 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. A 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 Solaris updates.
Note - In previous Solaris releases, you could not install and boot the Solaris
OS from a disk that was greater than 1 terabyte in size.
Starting with the Solaris 10 10/09 release, you can install and boot the 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 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 Solaris installation program allocates a default swap area of
512 MB under the following conditions:
By default, the 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 20, 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
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 |
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. |
|
Disk Space Recommendations for Software Groups
The Solaris software groups are collections of 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 Solaris Software Group on your system, you cannot use the upgrade option to upgrade to the Developer 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 Solaris software, you can choose to add or
remove packages from the 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 Solaris software is packaged.
The following figure shows the grouping of software packages. Reduced Network Support contains
the minimal number of packages and Entire Solaris Software Group Plus OEM Support
contains all the packages.
Figure 4-1 Solaris Software Groups
Table 4-4 lists the 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 Solaris Software
Group Plus OEM Support |
Contains the packages for the Entire Solaris Software Group
plus additional hardware drivers, including drivers for hardware that is not on the
system at the time of installation. |
6.8 GB |
Entire Solaris Software Group |
Contains the packages for
the Developer Solaris Software Group and additional software that is needed for servers. |
6.7
GB |
Developer Solaris Software Group |
Contains the packages for the End User 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. |
6.6 GB |
End
User Solaris Software Group |
Contains the packages that provide the minimum code that
is required to boot and run a networked Solaris system and the Common
Desktop Environment. |
5.3 GB |
Core System Support Software Group |
Contains the packages that provide the
minimum code that is required to boot and run a networked Solaris system. |
2.0
GB |
Reduced Network Support Software Group |
Contains the packages that provide the minimum code
that is required to boot and run a 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. |
2.0 GB |
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