Nonstop Database, HiRDB Version 9 Disaster Recovery System Configuration and Operation Guide

[Contents][Index][Back][Next]

3.2.2 Building the HiRDB environment at the main site

Build the HiRDB system at the main site. For details about how to build a HiRDB system, see the HiRDB Version 9 Installation and Design Guide.

Note
Make sure that the correspondence between HiRDB file system areas and the paired volumes is correct. If there is a mistake, you might loose data or you may not be able to restart HiRDB at the remote site.

The following table describes the operands related to Real Time SAN Replication. For a description of individual operands, see the manual HiRDB Version 9 System Definition.

Table 3-4 Operands related to Real Time SAN Replication

Operand name Description or notes
pd_rise_use Specifies whether to use Real Time SAN Replication.
pd_rise_pairvolume_combination Specifies the Real Time SAN Replication processing method.
pd_rise_disaster_mode If the Real Time SAN Replication processing method is set to hybrid, this operand specifies whether to maintain data integrity by synchronizing the main site with the remote site.
pd_rise_fence_level Specifies the processing to be performed by HiRDB if an error occurs that causes the synchronous coping of data to the volumes at the remote site (transfer of all or part of the HiRDB files) to fail (specifies a fence level).
HORCMINST Specifies the instance number of the RAID Manager that defined the paired logical volume.
pd_mode_conf Specify MANUAL1 or MANUAL2 when Real Time SAN Replication is to be used (specify Y for the pd_rise_use operand). If you specify AUTO for this operand when Y is specified for the pd_rise_use operand, an error occurs during the HiRDB startup process.
pd_dbsync_point Specify sync when you specify Y for the pd_rise_use operand and hybrid for the pd_rise_pairvolume_combination operand.
pd_rdarea_open_attribute Note the following if you specify SCHEDULE for this operand:
  • When the Real Time SAN Replication processing method is set to hybrid, at least 2 seconds of overhead per transaction occurs when a transaction terminates.
  • When the Real Time SAN Replication processing method is set to hybrid, the system waits for the database to be synchronized with the remote site. At least number of RDAREAs accessed x 2 seconds of overhead might occur when a transaction terminates.
pd_spool_cleanup_interval_level
pd_spool_cleanup_level
The transaction information file, created when Real Time SAN Replication is being used, will be deleted based on the value specified for this operand.
pd_hostname This operand must be specified when you use Real Time SAN Replication. Specify the main site's standard host name in the main site's pd_hostname operand, and specify the remote site's standard host name in the remote site's pd_hostname operand.