Archive white papers

This paper discusses the characteristics of a data-intensive application that requires data mirroring and explains what must be done to plan, provision, and tune for optimal performance in a cluster spanning two remote sites.

This paper provides client and brand sales representatives the basic guidelines on how to identify, discuss, and qualify Disaster Recovery opportunities for IBM clients running AIX 5L applications on System p servers.

This paper describes GPFS (General Parallel File System) Version 2, Release 3 for AIX 5L and Linux. It provides an overview of key concepts which should be understood by those considering the product.

AIX 5L V5.3 and IBM POWER5 processors support new options for accessing disk devices: Virtual SCSI (VSCSI) allows access to disk through adapters in a server partition.

General Parallel File System (GPFS) provides a number of features that facilitate the implementation of highly-available GPFS environments capable of withstanding catastrophic hardware failures. This paper is written for Information Technology professionals who have some experience with GPFS, ESS PPRC, and FlashCopy.

AIX 5L Version 5.2 supports new facilities designed to improve the availability of a single node. In some cases, these can be used with High Availability Cluster Multiprocessing (HACMP). This white paper provides a brief explanation of the MPIO, NIB and VIPA facilities in AIX 5L V5.2, and describes the extent to which they can be combined with HACMP V5.1.

This paper describes how to plan for and deploy HACMP 5.1 in a single frame LPAR environment to minimize planned downtime for administrative tasks such as upgrades. A test case and detailed scripts are provided. The audience for this white paper is Information Technology professionals who have a general understanding of IBM HACMP and Logical Partitions (LPARs).

This article describes tests of DAR/6000 and presents results that captured the performance characteristics of a mirrored system from multiple perspectives. It explains the DAR/6000 setup, the suite of tests performed, and the test results. It also offers tips to users based on the test experience.