HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and Configuration Guide
Table Of Contents
- HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and Configuration Guide
- About this Guide
- 1- Planning a Subsystem
- Defining Subsystems
- What is Failover Mode?
- Selecting a Cache Mode
- Enabling Mirrored Caching
- What is the Command Console LUN?
- Determining Connections
- Assigning Unit Numbers
- What is Selective Storage Presentation?
- 2- Planning Storage Configurations
- Where to Start
- Determining Storage Requirements
- Configuration Rules for the Controller
- Addressing Conventions for Device PTL
- Choosing a Container Type
- Creating a Storageset Profile
- Planning Considerations for Storageset
- Changing Characteristics through Switches
- Specifying Storageset and Partition Switches
- Specifying Initialization Switches
- Specifying Unit Switches
- Creating Storage Maps
- 3- Preparing the Host System
- Installing RAID Array Storage System
- Making a Physical Connection
- Preparing LUNs for Access by Tru64 UNIX FileSystem
- DECsafe Available Server Environment (ASE)
- HSG80 Units and Tru64 UNIX Utilities
- Solution Software Upgrade Procedures
- New Features, ACS 8.7 for Tru64
- 4- Installing and Configuring HSG Agent
- 5- FC Configuration Procedures
- Establishing a Local Connection
- Setting Up a Single Controller
- Setting Up a Controller Pair
- Configuring Devices
- Configuring Storage Containers
- Assigning Unit Numbers and Unit Qualifiers
- Configuration Options
- Verifying Storage Configuration from Host
- 6- Using CLI for Configuration
- 7- Backing Up, Cloning, and Moving Data
- 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
- B- Installing, Configuring, and Removing the Client
- C- SWCC Agent in TruCluster Environment
- SWCC Overview
- Running the SWCC Agent on a V4.0G Cluster
- Running the SWCC Agent under ASE Services
- Running the SWCC Agent on a V5.x Cluster
- Problems with Running the Agent on Multiple Clusters
- Configure the Controller
- Use Multiple-Bus Failover Mode
- Verify That the HSG80/HSG60 Unit Offsets Are Zero
- Install and Run the Agent on One Cluster Member
- Example of Installing the Agent on a Cluster Member
- Create the CAA Action Script
- Create the CAA Resource
- Glossary
- Index
Planning Storage Configurations
2–18 HSG80 ACS Solution Software Version 8.7 for Compaq Tru64 UNIX Installation and
Configuration Guide
Planning Considerations for Storageset
This section contains the guidelines for choosing the storageset type needed for your
subsystem:
• “Stripeset Planning Considerations,” page 2–18
• “Mirrorset Planning Considerations,” page 2–21
• “RAIDset Planning Considerations,” page 2–22
• “Striped Mirrorset Planning Considerations,” page 2–24
• “Storageset Expansion Considerations,” page 2–26
• “Partition Planning Considerations,” page 2–26
Stripeset Planning Considerations
Stripesets (RAID 0) enhance I/O performance by spreading the data across multiple
disk drives. Each I/O request is broken into small segments called “chunks.” These
chunks are then simultaneously “striped” across the disk drives in the storageset,
thereby enabling several disk drives to participate in one I/O request.
For example, in a three-member stripeset that contains disk drives Disk 10000, Disk
20000, and Disk 10100, the first chunk of an I/O request is written to Disk 10000, the
second to Disk 20000, the third to Disk 10100, the fourth to Disk 10000, until all of
the data has been written to the drives (Figure 2–5).
Figure 2–5: 3-member RAID 0 stripeset (example 1)
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