Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 User Manual download pdf (Page 2)

Introduction to Linux Clustering

7.3.3 Coda.................................................................................................................................22

7.4 Replicated Storage...................................................................................................................22

7.4.1 Distributed Replicated Block Device (DRBD)................................................................22

7.5 Clustered Filesystems..............................................................................................................24

7.5.1 CLVM..............................................................................................................................24

7.5.2 GFS – Global File System...............................................................................................24

7.5.3 ext4 (Under development)...............................................................................................24

8 Cluster Examples and Challenges..................................................................................................25

8.1 Two node HA cluster with DRBD..........................................................................................25

8.2 Five node HA cluster with DRBD..........................................................................................26

8.3 Five node HA cluster with DRBD + Xen...............................................................................28

8.4 Geographically distributed clusters.........................................................................................28

8.4.1 Two node distributed cluster............................................................................................30

8.4.2 Three+ node distributed cluster.......................................................................................31

9 Further Reference...........................................................................................................................33

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Red Hat CLUSTER SUITE FOR ENTERPRISE LINUX 5.1 User Manual Page 2