HSG80 ACS Solution Software V8.6 for IBM AIM Installation and Configuration Guide
Table Of Contents
- HSG80 ACS Solution Software Version 8.6 for IBM AIX
- Contents
- Figures
- Tables
- About this Guide
- Chapter 1
- Planning a Subsystem
- Chapter 2
- Planning Storage
- Where to Start
- Configuration Rules
- Device PTL Addressing Convention
- Determining Storage Requirements
- Choosing a Container Type
- Creating a Storageset Profile
- Storageset Planning Considerations
- Storageset Expansion Considerations
- Partition Planning Considerations
- Changing Characteristics through Switches
- Storageset and Partition Switches
- Initialization Switches
- Unit Switches
- Storage Maps
- Chapter 3
- Preparing the Host System
- Chapter 4
- Installing and Configuring the HS-Series Agent
- Why Use StorageWorks Command Console (SWCC)?
- Installation and Configuration Overview
- About the Network Connection for the Agent
- Before Installing the Agent
- Installing and Configuring the Agent
- Running the Agent
- Reconfiguring the Agent
- Uninstall Agent, Storageworks Software, and Cambex Driver.
- High Availability Cluster Multi-Processor (HACMP)
- Enabler Software
- General Note on Software Installation
- SWCC Clients
- Running the Agent
- HACMP Implementation for the Agent
- Prerequisites
- Implementation
- Installing the Agent on an HACMP Cluster
- Installing and Configuring the Client on an HACMP cluster
- Operation of the Agent on an HACMP Cluster
- Normal Operation of the Agent on an HACMP Cluster
- Starting, Stopping and Checking for the Agent
- Password and Notification
- Client Functions and Storage Subsystem Options
- Failover with Agent as Part of a Resource Group
- Client IP Address
- Event Scripts
- Notification within HACMP
- Node Isolation Recovery
- Failure of the Agent
- Polling all nodes in cluster for presence of a running Agent
- Restarting the Agent on surviving node
- Notification
- Supporting Tools
- HACMP for AIX Primary Event Scripts
- HACMP for AIX Secondary Event Scripts
- Chapter 5
- Configuration Procedures
- Establishing a Local Connection
- Setting Up a Single Controller
- Setting Up a Controller Pair
- Configuring Devices
- Configuring a Stripeset
- Configuring a Mirrorset
- Configuring a RAIDset
- Configuring a Striped Mirrorset
- Configuring a Single-Disk Unit (JBOD)
- Configuring a Partition
- Assigning Unit Numbers and Unit Qualifiers
- Configuration Options
- Chapter 6
- Verifying Storage Configuration from the Host
- Chapter 7
- Configuration Example Using CLI
- Chapter 8
- Backing Up the Subsystem, Cloning Data for Backup, and Moving Storagesets
- Appendix A
- Subsystem Profile Templates
- Storageset Profile
- Storage Map Template 1 for the BA370 Enclosure
- Storage Map Template 2 for the second BA370 Enclosure
- Storage Map Template 3 for the third BA370 Enclosure
- Storage Map Template 4 for the Model 4214R Disk Enclosure
- Storage Map Template 5 for the Model 4254 Disk Enclosure
- Storage Map Template 6 for the Model 4310R Disk Enclosure
- Storage Map Template 7 for the Model 4350R Disk Enclosure
- Storage Map Template 8 for the Model 4314R Disk Enclosure
- Storage Map Template 9 for the Model 4354R Disk Enclosure
- Appendix B
- Installing, Configuring, and Removing the Client
- Appendix C
- Exploitation of the CLONE and SNAPSHOT Functions of the HSG80 in an AIX Environment
- Glossary
- Index
1–16 HSG80 ACS Solution Software Version 8.6 for IBM AIX Installation and Configuration Guide
An additional factor to consider when assigning unit numbers and offsets is SCSI version.
If the SCSI_VERSION switch of the
SET THIS_CONTROLLER/OTHER_CONTROLLER command is
set to SCSI-3, the CCL is presented as LUN 0 to every connection, superseding any unit
assignments. The interaction between SCSI version and unit numbers is explained further
in the next section.
In addition, the access path to the host connection must be enabled for the connection to
access the unit. See “Restricting Host Access in Transparent Failover Mode,” page 1–18.
Assigning Unit Numbers Depending on SCSI_VERSION
The SCSI_VERSION switch of the SET THIS_CONTROLLER/OTHER_CONTROLLER command
determines how the CCL is presented. There are two choices: SCSI-2 and SCSI-3. The
choice for SCSI_VERSION affects how certain unit numbers and certain host connection
offsets interact.
Assigning Host Connection Offsets and Unit Numbers in
SCSI-3 Mode
If SCSI_VERSION is set to SCSI-3, the CCL is presented as LUN 0 to all connections.
The CCL supersedes any other unit assignment. Therefore, in SCSI-3 mode, a unit that
would normally be presented to a connection as LUN 0 is not visible to that connection at
all.
The following methods are recommended for assigning host connection offsets and unit
numbers in SCSI-3 mode:
■ Offsets should be divisible by 10 (for consistency and simplicity).
■ Unit numbers should not be assigned at connection offsets (to avoid being masked by
the CCL at LUN 0).
For example, if a host connection has an offset of 20 and SCSI-3 mode is selected, the
connection will see LUNs as follows:
LUN 0 - CCL
LUN 1 - unit 21
LUN 2 - unit 22, etc.
In this example, if a unit 20 is defined, it will be superseded by the CCL and invisible to
the connection.