How to Plan Your Disk Space Needs

This section provides hints and information to help you determine your disk needs for HP-UX 11i v2. If you need more disk space, be sure to order the equipment and plan on installing it after backing up your current system.

Record the hardware path to the DVD drive.
Develop a clear configuration plan, including:
- File system sizes
- Swap space size
- Dump device
- Disk and file system parameters
- Mirroring information
If installing application programs other than those supplied within an HP-UX 11i v2 Operating Environment (OE), consider the vendor’s size recommendations.
When planning disk space, refer to these documents:
- Managing Systems and Workgroups: A Guide for HP-UX System Administrators — This manual is available on the Instant Information DVD and at the HP Technical Documentation Web site:
  http://docs.hp.com
- Disk and File Management Tasks on HP-UX — Prentice-Hall Hewlett-Packard Professional Books, 1997.

Disk Space Allocation for File Partitions

Depending on your system’s purpose, you may need to determine how much disk space you will need for each file partition before you cold-install or update to HP-UX 11i v2. For example, if you plan to install applications from other vendors, you may need to modify the size of the /opt partition to accommodate their size.

Disk Space Requirements for a Cold-Install

Table 2-1 “File Partition Disk Space Allocation by Operating Environment” lists the amount of disk space allocated for the indicated partitions during a default cold-install for each Operating Environment. (The percentage used in each partition is in parentheses.)

Table 2-1 File Partition Disk Space Allocation by Operating Environment^[1]

Partition	FOE	EOE	MCOE	TCOE
`/`	410 MB (47% used)	425 MB (49% used)	409 MB (48% used)	409 MB (49% used)
`/stand`	299 MB (11% used)	311 MB (22% used)	298 MB (11% used)	311 MB (22% used)
`/var`	4.7 GB (15% used)	4.7 GB (24% used)	4.7 GB (15% used)	4.7 GB (27% used)
`/usr`	2.9 GB (54% used)	5.1 GB (49% used)	3.1 GB (54% used)	6.2 GB (45% used)
`/tmp`	212 MB (4% used)	212 MB (4% used)	212 MB (4% used)	212 MB (4% used)
`/opt`	2.6 GB (68% used)	3.8 GB (57% used)	2.7 GB (69% used)	5.0 GB (62% used)
`/home`	32 MB (26% used)	32 MB (26% used)	32 MB (26% used)	32 MB (26% used)
Total^[2]^,^[3]	11.5 GB (38% used)	14.6 GB (42% used)	11.5 GB (39% used)	16.9 GB (44% used)
^[1]The results are from using the bdf(1M) command; your results may vary if you use the du(1) command. ^[2]Totals are not exact due to rounding. ^[3]Totals do not include disk space required for the EFI Boot Partition, HP Service Partition, or `/swap`.

Depending on how much disk space is available, you can change the partition size to meet your needs. For information about modifying your file system, see Managing Systems and Workgroups: A Guide for HP-UX System Administrators at the HP Technical Documentation Web site:

http://docs.hp.com

Disk Space Requirements for an Update

To ensure a successful update to HP-UX 11i v2, make sure that you have at least as much disk space allocated to the file partitions listed in Table 2-1 “File Partition Disk Space Allocation by Operating Environment”, and that each partition (most importantly, /usr, /opt, and /var) has at least 10-20 percent free space to allow for any growth. Additionally, make sure that you have at least 1 GB allocated for /swap.

How to Plan Your Disk Space Needs

Technical documentation

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Disk Space Allocation for File Partitions

Disk Space Requirements for a Cold-Install

Disk Space Requirements for an Update