Chapter 3. HPSS Planning
3.1. Overview
This chapter provides HPSS planning guidelines and considerations to help the administrator effectively plan, and make key decisions about, an HPSS system.
The planning process for HPSS must be done carefully to ensure that the resulting system satisfies the site’s requirements and operates in an efficient manner. We recommend that the administrator read this entire chapter before planning the system.
The following paragraphs describe the recommended planning steps for the HPSS installation, configuration, and operational phases.
3.1.1. HPSS System Architecture
Before getting into the details of storage sizing, it is best to understand the overall HPSS system and how the components are arranged to build the HSM. Figure 4: HPSS Generic Configuration on page 52 shows the basic architecture of an HPSS system including disk and tape resources and their relationship to HPSS server nodes, Mover nodes, internal and external networks, and SAN interconnections. Specifics of this architecture for a given site are developed during the proposal and initial project planning stages of a deployment. Ideally the required space is derived from requirements gathered from the HPSS Questionnaire document, known operational constraints, transfer and transaction rates, and anticipated storage capacity needs. Often the disk and tape resources are dictated by current equipment already available and budgetary constraints on what can be purchased. Specific quantities and sizing of these resource are beyond the scope of this planning document. These are largely defined by the above inputs and negotiations during the initial planning meeting in which the systems engineering team draws from experience and similar deployments to design a working architecture that balances the
HPSS Installation Guide | July 2008 |
Release 6.2 (Revision 2.0) | 51 |
