Managing HP Serviceguard A.12.00.00 for Linux, June 2014

3.5.11 VLAN Configurations................................................................................................68
3.5.11.1 What is VLAN?.................................................................................................68
3.5.11.2 Support for Linux VLAN......................................................................................68
3.5.11.3 Configuration Restrictions....................................................................................68
3.5.11.4 Additional Heartbeat Requirements......................................................................68
3.6 Volume Managers for Data Storage....................................................................................69
3.6.1 Storage on Arrays......................................................................................................69
3.6.2 Monitoring Disks.......................................................................................................70
3.6.3 More Information on LVM...........................................................................................70
3.6.4 Veritas Volume Manager (VxVM)................................................................................70
3.6.4.1 Limitations.........................................................................................................71
3.7 About Persistent Reservations..............................................................................................71
3.7.1 Rules and Limitations..................................................................................................71
3.7.2 How Persistent Reservations Work................................................................................72
3.8 Responses to Failures ........................................................................................................73
3.8.1 Reboot When a Node Fails .......................................................................................73
3.8.1.1 What Happens when a Node Times Out...............................................................73
3.8.1.1.1 Example .....................................................................................................74
3.8.2 Responses to Hardware Failures .................................................................................74
3.8.3 Responses to Package and Service Failures ..................................................................75
3.8.4 Responses to Package and Generic Resources Failures...................................................75
3.8.4.1 Service Restarts .................................................................................................76
3.8.4.2 Network Communication Failure .........................................................................76
4 Planning and Documenting an HA Cluster ..................................................77
4.1 General Planning .............................................................................................................77
4.1.1 Serviceguard Memory Requirements.............................................................................77
4.1.2 Planning for Expansion ..............................................................................................77
4.2 Using Serviceguard with Virtual Machines...........................................................................78
4.2.1 Rules and Restrictions.................................................................................................78
4.2.2 Supported cluster configuration options........................................................................79
4.3 Hardware Planning ..........................................................................................................79
4.3.1 SPU Information ........................................................................................................79
4.3.2 LAN Information ......................................................................................................79
4.3.3 Shared Storage.........................................................................................................80
4.3.3.1 FibreChannel.....................................................................................................80
4.3.3.2 iSCSI...............................................................................................................80
4.3.4 Disk I/O Information ................................................................................................80
4.3.5 Hardware Configuration Worksheet ............................................................................81
4.4 Power Supply Planning .....................................................................................................81
4.4.1 Power Supply Configuration Worksheet .......................................................................82
4.5 Cluster Lock Planning........................................................................................................82
4.5.1 Cluster Lock Requirements...........................................................................................82
4.5.2 Planning for Expansion..............................................................................................82
4.5.3 Using a Quorum Server.............................................................................................82
4.5.3.1 Quorum Server Worksheet .................................................................................83
4.6 Volume Manager Planning ................................................................................................83
4.6.1 Volume Groups and Physical Volume Worksheet............................................................83
4.7 VxVM Planning ...............................................................................................................83
4.8 Cluster Configuration Planning ..........................................................................................84
4.8.1 Easy Deployment.......................................................................................................84
4.8.1.1 cmquerycl -N......................................................................................................84
4.8.1.2 cmpreparestg.....................................................................................................84
4.8.1.3 cmdeploycl........................................................................................................85
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