InfoScale™ 9.0 Storage Foundation Cluster File System High Availability Configuration and Upgrade Guide - Solaris
- Section I. Introduction to SFCFSHA
- Introducing Storage Foundation Cluster File System High Availability
- Section II. Configuration of SFCFSHA
- Preparing to configure
- Preparing to configure SFCFSHA clusters for data integrity
- About planning to configure I/O fencing
- Setting up the CP server
- Configuring the CP server manually
- Configuring SFCFSHA
- Configuring a secure cluster node by node
- Verifying and updating licenses on the system
- Configuring SFCFSHA clusters for data integrity
- Setting up disk-based I/O fencing using installer
- Setting up server-based I/O fencing using installer
- Performing an automated SFCFSHA configuration using response files
- Performing an automated I/O fencing configuration using response files
- Configuring CP server using response files
- Manually configuring SFCFSHA clusters for data integrity
- Setting up disk-based I/O fencing manually
- Setting up server-based I/O fencing manually
- Configuring server-based fencing on the SFCFSHA cluster manually
- Setting up non-SCSI-3 fencing in virtual environments manually
- Setting up majority-based I/O fencing manually
- Section III. Upgrade of SFCFSHA
- Planning to upgrade SFCFSHA
- Preparing to upgrade SFCFSHA
- Performing a full upgrade of SFCFSHA using the installer
- Performing a rolling upgrade of SFCFSHA
- Performing a phased upgrade of SFCFSHA
- About phased upgrade
- Performing a phased upgrade using the product installer
- Performing an automated SFCFSHA upgrade using response files
- Upgrading Volume Replicator
- Upgrading VirtualStore
- Upgrading SFCFSHA using Boot Environment upgrade
- Performing post-upgrade tasks
- Planning to upgrade SFCFSHA
- Section IV. Post-configuration tasks
- Section V. Configuration of disaster recovery environments
- Section VI. Adding and removing nodes
- Adding a node to SFCFSHA clusters
- Adding the node to a cluster manually
- Setting up the node to run in secure mode
- Adding a node using response files
- Configuring server-based fencing on the new node
- Removing a node from SFCFSHA clusters
- Adding a node to SFCFSHA clusters
- Section VII. Configuration and Upgrade reference
- Appendix A. Installation scripts
- Appendix B. Configuration files
- Appendix C. Configuring the secure shell or the remote shell for communications
- Appendix D. High availability agent information
- Appendix E. Sample SFCFSHA cluster setup diagrams for CP server-based I/O fencing
- Appendix F. Reconciling major/minor numbers for NFS shared disks
- Appendix G. Configuring LLT over UDP
- Using the UDP layer for LLT
- Manually configuring LLT over UDP using IPv4
- Using the UDP layer of IPv6 for LLT
- Manually configuring LLT over UDP using IPv6
About planning to configure I/O fencing
After you configure SFCFSHA with the installer, you must configure I/O fencing in the cluster for data integrity. Application clusters on release version 9.0 (HTTPS-based communication) only support CP servers on release version 7.3.1 and later.
You can configure disk-based I/O fencing, server-based I/O fencing, or majority-based I/O fencing. If your enterprise setup has multiple clusters that use VCS for clustering, Arctera recommends you to configure server-based I/O fencing.
The coordination points in server-based fencing can include only CP servers or a mix of CP servers and coordinator disks.
Arctera also supports server-based fencing with a single coordination point which is a single highly available CP server that is hosted on an SFHA cluster.
Warning:
For server-based fencing configurations that use a single coordination point (CP server), the coordination point becomes a single point of failure. In such configurations, the arbitration facility is not available during a failover of the CP server in the SFHA cluster. So, if a network partition occurs on any application cluster during the CP server failover, the application cluster is brought down. Arctera recommends the use of single CP server-based fencing only in test environments.
You use majority fencing mechanism if you do not want to use coordination points to protect your cluster. Arctera recommends that you configure I/O fencing in majority mode if you have a smaller cluster environment and you do not want to invest additional disks or servers for the purposes of configuring fencing.
Note:
Majority-based I/O fencing is not as robust as server-based or disk-based I/O fencing in terms of high availability. With majority-based fencing mode, in rare cases, the cluster might become unavailable.
If you have installed SFCFSHA in a virtual environment that is not SCSI-3 PR compliant, you can configure non-SCSI-3 fencing.
See Figure: Workflow to configure non-SCSI-3 I/O fencing.
Figure: Workflow to configure I/O fencing illustrates a high-level flowchart to configure I/O fencing for the SFCFSHA cluster.
Figure: Workflow to configure non-SCSI-3 I/O fencing illustrates a high-level flowchart to configure non-SCSI-3 I/O fencing for the SFCFSHA cluster in virtual environments that do not support SCSI-3 PR.
After you perform the preparatory tasks, you can use any of the following methods to configure I/O fencing:
You can also migrate from one I/O fencing configuration to another.
See the Storage foundation High Availability Administrator's Guide for more details.