Journal Management & Journal Assisted Replication; Journal And Journal File; Creating A Journal - American Megatrends StorTrends 1300 User Manual

Journal Management & Journal Assisted
Replication

Journal and Journal File

Journal is a storage pool created using logical drives (LD). One or more Journal Files are
created in a Journal. Each Journal File represents a Consistency Group (CG). Consistency
Group is nothing but a group of related volumes which work together to carter storage for
database or similar application.
Journaling provides a mechanism to log main volumes' (part of a CG) IO sequentially
into Journal File. Along with volumes' IO, it also journals Snapshot events, Windows
events and Custom events in chronological order. Thus Journal is a backbone for both
Journal Assisted Asynchronous Replication (also called as Continuous Data Replication)
and Continuous Data Protection.

Creating a Journal

Journal is creating using one or more Logical Drives. Each Journal requires a name.
CLI: A Journal can be created using ITX 2.7 CLI interface.
For example: cli create -t journal -j journal0 -l /dev/sdc journal
Where –j option is the Journal name and –l option is for LD name. –l option can be
repeated for as many LDs for a Journal.
ManageTrends: Under RAID Management, select appropriate enclosure where LDs are
exists. Then click 'Create Journal'.
272 StorTrends® 1300 User's Guide (StorTrends iTX version 2.7)