IBM HPSS manual High Availability Option, Prerequisite Software Considerations, 1.1. DB2, Kerberos

authentication and authorization (subject to certain caveats – See FTP documentation for details). The pftp_client binary must be built using the distributed source code. However, it is the site's responsibility to obtain the necessary Kerberos components.

ACLs entries in the AUTHZACL table and/or ACLs on HPSS directories and files may need to be added for appropriate foreign_user and/or foreign_group entries.

3.2.8. High Availability Option

The High Availability component allows HPSS to inter-operate with IBM’s HACMP for AIX software. When configured with the appropriate redundant hardware, it allows failures of individual system components (network adapters, hard disks, core server nodes, power supplies, etc.) to be overcome, allowing the system to resume servicing requests with minimal downtime.

The specifics of each HA system can vary greatly such that no single formula applies to all situations. However, additional hardware will be required for each HA system (e.g., redundant core server nodes, extra core server hard disks, RS232 cables, etc.). Also, HACMP for AIX software is required.

A highly available (HA) HPSS system requires additional systems engineering and testing. It is available as a special bid item for installing and configuring HPSS on a High Availability system.

For further information on HA HPSS, please contact your HPSS Customer Service Representative.

For more information on HACMP for AIX, please see the HACMP for AIX 5L web site at: http://www-03.ibm.com/systems/p/software/hacmp.html.

3.3. Prerequisite Software Considerations

This section defines the prerequisite requirements for HPSS. Some products must be obtained separately from HPSS and installed prior to the HPSS installation and configuration.

3.3.1. Prerequisite Software Overview

This section describes the prerequisite software packages required by HPSS and provides information to obtain them. Refer to Section 3.3.2: Prerequisite Summary By HPSS Node Type on page 59 for details on software versions.

3.3.1.1. DB2

HPSS uses the DB2 Universal Database Enterprise Server Edition by IBM Corporation to manage all HPSS metadata. DB2 software is included in the HPSS distribution. Refer to Section 5.3.1.2: Install HPSS Documentation and DB2 Software on page 141 for more information. The required DB2 FixPak must be downloaded and installed after the DB2 base is installed. DB2 FixPaks can be downloaded from the DB2 Universal Database for Linux, UNIX, and Windows webpage

at http://www-306.ibm.com/software/data/db2/udb/support/downloadadv8.html.

3.3.1.2. Kerberos

HPSS uses Massachusetts Institute of Technology (MIT) Kerberos to implement Kerberos authentication. MIT Kerberos is a network authentication protocol designed to provide authentication for client/server applications by using secret-key cryptography. A free implementation of this protocol can be downloaded from the MIT's website (http://web.mit.edu/kerberos/). Refer to Section 5.2.2: Install MIT Kerberos (If Using Kerberos Authentication) on page 137 for more information.

For Linux, Kerberos is installed as part of the operating system.

HPSS Installation Guide	July 2008
Release 6.2 (Revision 2.0)	58