Chapter 2 HPSS Planning
40 September 2002 HPSS Installation Guide
Release 4.5, Revision 2
that are introduced into your HPSS system. For example, if you plan to use HPSS to backup all of
thePCs in your organization, it would be best to aggregate the individual files into large individual
files before moving them into the HPSS name space.
The following planning steps must be carefully considered for the HPSS infrastructure
configuration and the HPSS configuration phases:
1. Identifythe site’s storage requirements and policies, such as the initial storage system size,
anticipated growth, usage trends, average file size, expected throughput, backup policy.
andavailability. For more information, see Section 2.2: Requirements and Intended Usages for
HPSS on page 43.
2. Define the architecture of the entire HPSS system to satisfy the above requirements.The
planning should:
◆Identify the nodes to be configured as part of the HPSS system.
◆Identifythe disk and tape storage devices to be configured as part of the HPSS system
andthe nodes/networks to which each of the devices will be attached. Storage devices
can be assigned to a number of nodes to allow data transfers to utilize the devices in
parallel without being constrained by the resources of a single node. This capability
also allows the administrator to configure the HPSS system to match the device
performance with the network performance used to transfer the data between the
HPSS Movers and the end users (or other HPSS Movers in the case of internal HPSS
data movement for migration and staging). Refer to Section 2.4 for more discussions
on the storage devices and networks supported by HPSS.
◆Identify the HPSS subsystems to be configured and how resources will be allocated
amongthem. Refer to Section 2.7: Storage Subsystem Considerations on page 81 for more
discussion on subsystems.
◆Identifythe HPSS servers to be configured and the node where each of the servers will
run.Refer to Section 2.6: HPSS Server Considerations on page 62 for more discussions on
the HPSS server configuration.
◆Identifythe HPSS user interfaces (e.g. FTP, PFTP,NFS,XFS, DFS) to be configured and
the 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 interfaces
supported 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:Prerequisite
SoftwareConsiderations on page 46 for more information on the HPSS prerequisite software
requirements.
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 to
Section2.10.2: HPSS Metadata Space on page 106 for more discussions of SFS sizing required
by HPSS.
5. Verify that each of the identified nodes has sufficient resources to handle the work loads
and resources to be imposed on the node. Refer to Section 2.10.3:System Memory and Disk
Space on page 132 for more discussions on the system resource requirements.