Chapter 2 HPSS Planning40 September 2002 HPSS Installation GuideRelease 4.5, Revision 2that are introduced into your HPSS system. For example, if you plan to use HPSS to backup all ofthe PCs in your organization, it would be best to aggregate the individual files into large individualfiles before moving them into the HPSS name space.The following planning steps must be carefully considered for the HPSS infrastructureconfiguration and the HPSS configuration phases:1. Identify the site’s storage requirements and policies, such as the initial storage system size,anticipated growth, usage trends, average file size, expected throughput, backup policy.and availability. For more information, see Section 2.2: Requirements and Intended Usages forHPSS on page 43.2. Define the architecture of the entire HPSS system to satisfy the above requirements.Theplanning should:u Identify the nodes to be configured as part of the HPSS system.u Identify the disk and tape storage devices to be configured as part of the HPSS systemand the nodes/networks to which each of the devices will be attached. Storage devicescan be assigned to a number of nodes to allow data transfers to utilize the devices inparallel without being constrained by the resources of a single node. This capabilityalso allows the administrator to configure the HPSS system to match the deviceperformance with the network performance used to transfer the data between theHPSS Movers and the end users (or other HPSS Movers in the case of internal HPSSdata movement for migration and staging). Refer to Section 2.4 for more discussionson the storage devices and networks supported by HPSS.u Identify the HPSS subsystems to be configured and how resources will be allocatedamong them. Refer to Section 2.7: Storage Subsystem Considerations on page 81 for morediscussion on subsystems.u Identify the HPSS servers to be configured and the node where each of the servers willrun. Refer to Section 2.6: HPSS Server Considerations on page 62 for more discussions onthe HPSS server configuration.u Identify the HPSS user interfaces (e.g. FTP, PFTP, NFS,XFS, DFS) to be configured andthe nodes where the components of each user interface will run. Refer to Section 2.5:HPSS Interface Considerations on page 58 for more discussion on the user interfacessupported by HPSS.3. Ensure that the prerequisite software has been purchased, installed, and configured prop-erly in order to satisfy the identified HPSS architecture. Refer to Section 2.3: PrerequisiteSoftware Considerations on page 46 for more information on the HPSS prerequisite softwarerequirements.4. Determine the SFS space needed to satisfy the requirements of the HPSS system. In addi-tion, verify that there is sufficient disk space to configure the space needed by SFS. Refer toSection 2.10.2: HPSS Metadata Space on page 106 for more discussions of SFS sizing requiredby HPSS.5. Verify that each of the identified nodes has sufficient resources to handle the work loadsand resources to be imposed on the node. Refer to Section 2.10.3: System Memory and DiskSpace on page 132 for more discussions on the system resource requirements.
