Chapter 2 HPSS Planning
HPSS Installation Guide September 2002 43
Release 4.5, Revision 2

2.1.4 HPSS Deployment Planning

Thesuccessful deployment of an HPSS installation is a complicated task which requires reviewing
customer/systemrequirements, integration of numerous products and resources, proper training
ofusers/administrators, and extensive integration testing in the customer environment. Early on,
a set of meetings and documents are required to ensure the resources and intended configuration
of those resources at the customer location can adequately meet the expectations required of the
system. The next step in this process is to help the customer coordinate the availability and
readiness of the resources before the actual installation of HPSS begins. Each one of the products/
resources that HPSS uses must be installed, configured and tuned correctly for the final system to
functionand perform as expected. Once installed, a series of tests must be planned and performed
to verify that the system can meet the demands of the final production environment. And finally,
propertraining of those administrating the system, as well as those who will use it, is necessary to
make a smooth transition to production.
Tohelp the HPSS system administrators in all of these tasks, a set of procedures in addition to this
document have been developed to assist those involved in this process. The HPSS Deployment
Process contains a detailed outline of what is required to bring an HPSS system online from an
initial introduction and review of the customer environment to the time the system is ready for
production use. The deployment procedures include a time line plus checklist that the HPSS
customerinstallation/system administration team should use to keep the deployment of an HPSS
system on track. This is the same guide that the HPSS support/deployment team uses to monitor
and check the progress of an installation.
2.2 Requirements and Intended Usages for HPSS
This section provides some guidance for the administrator to identify the site’s requirements and
expectation of HPSS. Issues such as the amount of storage needed, access speed and data transfer
speed, typical usage, security, expected growth, data backup, and conversion from an old system
must be factored into the planning of a new HPSS system.

2.2.1 Storage System Capacity

The amount of HPSS storage space the administrator must plan for is the sum of the following
factors:
• The amount of storage data from anticipated new user accounts.
• The amount of new storage data resulting from normal growth of current accounts.
• The amount of storage space needed to support normal storage management such as
migration and repack.
• The amount of storage data to be duplicated.
Another component of data storage is the amount of metadata space needed for user directories
and other HPSS metadata. Much of this data must be duplicated (called “mirroring”) in real time
on separate storage devices. Refer to Section 2.10.1 and Section 2.10.2 for more information on
determining the needed storage space and metadata space.