Calculating the Memory and Disk Space Requirements

The HPDPS client and servers require a minimum of 64MB of installed memory on the system on which they are running. Also, there must be enough disk space available for the following purposes:

installation of HPDPS components
spooling space (for HPDPS clients and supervisors)
paging space

Calculate the sum of the disk space needed for each component of HPDPS that you plan to install on a workstation. See Table 2-1 for the component disk space values.

If you are installing DCE as a prerequisite for HPDPS, be sure to consider the DCE space requirements in addition to the HPDPS requirements.

Disk Space Required for Installation of HPDPS Components

Table 2-1 lists the disk space required to install each HPDPS component.

Table 2-1 Disk Space Requirements for HPDPS Installation

Component(s)	Disk Space Required
All (Client, Supervisor, and Spooler)	17MB
Client only	9MB
Client and Spooler	13MB
Client and Supervisor	13MB
Servers (Spooler and Supervisor)	13MB
Spooler only	12MB
Supervisor only	12MB

The HPDPS components are installed in the /opt/pd file system.

A /var/opt/pd file system is also created for spooling purposes. It also contains the printer configuration database. This database contains the current print environment print configuration.

Disk Space Required for Spooling

Calculate the amount of disk space required for spooling based on the needs of your environment. Consider the following factors:

The number of print jobs that will reside in a supervisor or a HPDPS client simultaneously.
For supervisors, assume there will be several jobs in the "pre-processing" state for each printer. For HPDPS clients, a job resides in the client's spooling space from the time it is submitted until it has finished printing.
The average size of each job.
The amount of spooling space required for logging functions.
The default value is 2MB, but you can change this value using the HPDPS log configuration files. See “Changing Server Error Log Attribute Values ” in Chapter 12 for information on how to change the default.

Calculate the spooling space requirement as follows:

Spooling space = 2MB + ((# of jobs) x (average file size in MB))

For example, if you typically have 50 jobs being processed by an HPDPS client, and each one is approximately 0.2MB, calculate the spooling space as follows:

Spooling space = 2MB + (50 x 0.2MB) = 12MB

Disk Space Required for Paging

If your system has more than 64MB of memory, calculate the paging space by multiplying the installed memory by two and adding 10KB per job. Table 2-2 identifies the paging space requirements based on the number of jobs being processed by either the HPDPS client or supervisor at any point in time.

Table 2-2 Paging Space Recommendation Based on Number of Jobs Being Processed

Installed Memory	Component	Less Than 500 Jobs Being Processed	500 to 1000 Jobs Being Processed	More Than 1000 Jobs Being Processed
64MB	Spooler	148MB	168MB	208MB
	Client or Supervisor	128MB	128MB	128MB
128MB	Spooler	276MB	296MB	336MB
	Client or Supervisor	256MB	256MB	256MB
256MB	Spooler	532MB	552MB	592MB
	Client or Supervisor	512MB	512MB	512MB
	Additional Spooler/Host	20MB	22MB	24MB
	Additional Supervisor/Host	20MB	20MB	20MB




	NOTE: The paging space requirement is a system recommendation; it is not exclusive to the HPDPS application. Therefore, if your current system has 64MB of installed memory and you have already defined 180MB of paging space, you do not need to increase your paging space. However, if you experience performance problems because your current applications use a significant portion of your paging space, consider increasing your paging space.

Total Disk Space Required for an HPDPS Environment

To find out how much disk space needs to be available on the system, calculate the sum of the space needed for the HPDPS components, the spooling space, and the paging space.

Calculating the Memory and Disk Space Requirements

Technical documentation

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Disk Space Required for Installation of HPDPS Components

Disk Space Required for Spooling

Disk Space Required for Paging

Total Disk Space Required for an HPDPS Environment