HP StorageWorks EVA Cluster Extension Software Administrator Guide (T3667-96045, April 2010)

Contents
1 EVA Cluster Extension features ............................................................. 9
Integration into cluster software ..................................................................................................... 9
Graphical user interface ........................................................................................................ 9
CLI for easy integration ......................................................................................................... 9
Disaster tolerance through geographical dispersion ....................................................................... 10
Automated redirection of mirrored disks ....................................................................................... 10
Cluster setup considerations ....................................................................................................... 11
MSCS ............................................................................................................................... 11
SLE HA cluster setup considerations ...................................................................................... 12
Quorum ..................................................................................................................... 12
STONITH .................................................................................................................... 12
Networking in an SLE HA cluster .................................................................................. 13
Resource constraints .................................................................................................... 13
Resource operation attribute .......................................................................................... 13
EVA Cluster Extension resource dependency ................................................................... 13
Failover order ............................................................................................................. 13
Failback option .......................................................................................................... 14
Migration-threshold ...................................................................................................... 14
Disk monitoring .......................................................................................................... 14
RHCS cluster setup considerations ........................................................................................ 14
Quorum ..................................................................................................................... 14
Fencing ..................................................................................................................... 14
Qdisk configuration ..................................................................................................... 15
Failover domains ......................................................................................................... 15
Failback policy ............................................................................................................ 15
Recovery policy ........................................................................................................... 16
Service hierarchical structure and resource dependency .................................................... 16
Disk monitoring ........................................................................................................... 16
Storage system configurations ..................................................................................................... 16
One-to-one configuration ..................................................................................................... 17
Consolidated DR site configuration ....................................................................................... 18
Processes and components ......................................................................................................... 19
HP Continuous Access EVA ........................................................................................................ 20
Synchronous replication ...................................................................................................... 20
Asynchronous replication (Windows only) .............................................................................. 20
HP Continuous Access EVA DR groups .................................................................................. 20
Rolling disaster protection and snapshots/snapclones ............................................................. 21
HP Storage Management Initiative Specification ........................................................................... 21
User configuration file ............................................................................................................... 22
Resource configuration file (Linux only) ......................................................................................... 22
Force flag ................................................................................................................................ 22
Planning for EVA Cluster Extension .............................................................................................. 22
HP Command View EVA and HP SMI-S EVA dependencies ...................................................... 22
Configuration file (clxsmiscfg) for Linux .................................................................................. 23
Configuration tool (clxevaconfig.exe) for Windows ................................................................. 23
EVA Cluster Extension Software Administrator Guide 3