Sun Microsystems 3 manual Overview, Sun Sndr Software Description

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Overview

Caution – Do not install or use the Sun StorEdge Version 3.0 Core and data services software on servers in a Sun Cluster 3.0 environment. The Version 3.0 software is not co-existent with the Sun Cluster 3.0 environment. The Version 3.0 software is co-existent in the Sun Cluster 2.2 environment, where it will not interfere with failover. The Version 3.0 core and data services software is cluster aware in the Sun Cluster 3.0 Update 1 environment and provides high availability for the Sun StorEdge software.

Sun SNDR Software Description

The Sun SDNR software is a remote replication facility for the Solaris™ operating environment. It is intended for use as part of a disaster recovery and business continuance plan to provide redundant storage of critical information across physically separate sites. It is designed to be active during normal application access to the data volumes, and it will continually replicate the data to the remote site.

The Sun SDNR software enables you to replicate disk volumes between physically separate primary and secondary hosts in real time. To transport data, the Sun SDNR software uses any Sun network adapter that supports TCP/IP.

The Sun SNDR software volume set consists of a primary volume residing on a local host and a secondary volume residing on a remote host. The volume set also includes a bitmap volume on each host to track write operations and differences between the volumes.

You can update the data on the secondary volume by issuing a command to resynchronize the volumes. You can also restore data from the secondary volume to the primary volume by issuing a command to reverse resynchronize the volumes.

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