Chapter 2 HPSS PlanningHPSS Installation Guide September 2002 43Release 4.5, Revision 22.1.4 HPSS Deployment PlanningThe successful deployment of an HPSS installation is a complicated task which requires reviewingcustomer/system requirements, integration of numerous products and resources, proper trainingof users/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 configurationof those resources at the customer location can adequately meet the expectations required of thesystem. The next step in this process is to help the customer coordinate the availability andreadiness 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 tofunction and perform as expected. Once installed, a series of tests must be planned and performedto verify that the system can meet the demands of the final production environment. And finally,proper training of those administrating the system, as well as those who will use it, is necessary tomake a smooth transition to production.To help the HPSS system administrators in all of these tasks, a set of procedures in addition to thisdocument have been developed to assist those involved in this process. The HPSS DeploymentProcess contains a detailed outline of what is required to bring an HPSS system online from aninitial introduction and review of the customer environment to the time the system is ready forproduction use. The deployment procedures include a time line plus checklist that the HPSScustomer installation/system administration team should use to keep the deployment of an HPSSsystem on track. This is the same guide that the HPSS support/deployment team uses to monitorand check the progress of an installation.2.2 Requirements and Intended Usages for HPSSThis section provides some guidance for the administrator to identify the site’s requirements andexpectation of HPSS. Issues such as the amount of storage needed, access speed and data transferspeed, typical usage, security, expected growth, data backup, and conversion from an old systemmust be factored into the planning of a new HPSS system.2.2.1 Storage System CapacityThe amount of HPSS storage space the administrator must plan for is the sum of the followingfactors:• 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 asmigration and repack.• The amount of storage data to be duplicated.Another component of data storage is the amount of metadata space needed for user directoriesand other HPSS metadata. Much of this data must be duplicated (called “mirroring”) in real timeon separate storage devices. Refer to Section 2.10.1 and Section 2.10.2 for more information ondetermining the needed storage space and metadata space.
