Galera is a highly available Cluster based on MySQL for applications needing reliable database back-end's like Asterisk.

Galera's synchronous true multi-Master Replication (http://codership.com/) is the right solution to circumvent these problems not like other MySQL HA solutions are either not reliable (Master-Master Replication: data inconsistencies and limited scaleability) or over complex in Operations (active/passive fail-over Cluster)..

Galera Replication adds the following benefits to Asterisk servers:

* Asterisk can write to any MySQL node in the Cluster
* Galera does Synchronous Replication
* Galera uses crash-safe InnoDB tables
* Galera Cluster is an active-active real multi-Master topology
* Galera does automatic membership control
* Galera provides true parallel Replication on row level
* Galera has no Slave lag
* Galera does not loose transactions
* Galera scales reading and writing
* Galera Cluster can be used in a LAN or a WAN!

MySQL/Galera is synchronous multi-master cluster for MySQL/InnoDB database, having features like:

• Synchronous replication
• Active-active multi-master topology
• Read and write to any cluster node
• Automatic membership control, failed nodes drop from the cluster
• Automatic node joining
• True parallel replication, on row level
• Direct client connections, native MySQL look & feel

These features yield un-seen benefits for a DBMS clustering solution:

• No slave lag
• No lost transactions
• Both read and write scalability
• Smaller client latencies

For more information visit www.fromdual.com