User guide
Table Of Contents
- MSA1000 User Guide
- Contents
- About this Guide
- Chapter 1: Introduction
- Chapter 2: Operating System Specific Information
- Chapter 3: MSA1000 Setup and Sample Configurations
- Chapter 4: Operation and Management
- Chapter 5: Array Configuration Utility (ACU)
- Installing the ACU on the Server
- Accessing the ACU
- Description of Screen Regions
- Configuring a New Controller
- Modifying an Existing Controller
- Probability of Logical Drive Failure
- Chapter 6: Command Line Interface (CLI)
- CLI Overview
- CLI Setup
- Help Commands
- Display Commands
- Array Controller Configuration Commands
- LUN Management Commands
- Server Connection Commands
- Selective Storage Presentation/Access Control List Commands
- Appendix A: Regulatory Compliance Notices
- Appendix B: Electrostatic Discharge
- Appendix C: Specifications
- Appendix D: Hard Drive Arrays
- Appendix E: Recovering from Hard Drive Failure
- Appendix F: Controller Display Messages
- Appendix G: Recovery ROM and ROM Cloning
- Appendix H: SCSI ID Assignments
- Index
Introduction
19Modular SAN Array 1000 User Guide
MSA Hub 2/3
The MSA Hub 2/3 is an optional input/output device designed to replace the
single port Fibre Channel I/O Module that comes standard with the MSA1000.
This option is designed to provide an inexpensive and easy way for a clustered
pair of servers to access the storage controller (using the arbitrated loop
configuration) without having to buy an external hub or switch. Two SFP ports are
presented to the user while internally a third port accesses the controller.
Figure 9 is an illustration of the MSA Hub 2/3.
If a second controller is added for additional functionality but not for system
redundancy, an MSA SAN Switch 2/8 or an MSA Hub 2/3 may be installed.
If you are using the MSA Hub 2/3 and an additional controller is installed for
redundancy, a second MSA Hub 2/3 must be ordered and installed. In redundant
configurations, the interconnect devices must be a matching pair.
Figure 9: MSA Hub 2/3
230941-005_MSA1000_UG.book Page 19 Thursday, April 17, 2003 5:53 PM