HP e3000 MPE/iX System Software Maintenance Manual (Release C.75.00) (30216-90344)
Chapter 3
Planning for Your Task
3.6 Estimating Disk Space
69
3.6 Estimating Disk Space
Read the subsections in this section:
• Non-Contiguous Disk Space Requirements
• Contiguous Disk Space Requirements
• Disk Space Error Messages
Before you begin to modify your system software make sure that you have enough disk space to update your
system. Modifying system software includes: updating the version, reinstalling your system software, adding
on purchased products from the SUBSYS tape, or applying patches. There are three types of disk space
requirements that are referenced during the modification process:
• Permanent (net) amount of non-contiguous disk space
required for the system software after it is modified.
• Maximum (peak) amount of non-contiguous disk space
required during the system software modification process.
• Amount of contiguous disk space
that the UPDATE tool requires to modify the system software.
NOTE The disk space values listed in this section are maximum estimated values only. The actual
amount of disk space used on your system will vary.
Non-Contiguous Disk Space Requirements
Table 3-5 “Non-Contiguous Disk Space Sectors,” lists the amount of non-contiguous disk space sectors
required for the three operating system components (SLT, FOS, SUBSYS) and PowerPatch of the currently
supported versions of the operating system software.
During the modification process, some files are duplicated temporarily, and sometimes older versions of files
are retained temporarily. This causes the “in process” (or peak) amount of disk space usage to be greater than
the “final” (or net) amount of disk space usage when the modification is complete.
You must have the peak amount of disk space available on your system during the process to successfully
modify your system.