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Storage : Continuous Data Protection (CDP) : CDP Flashback Window – Log view
We will first look at the Flashback Interface. It shows a selected CDP window. Note that
a journal file has been selected and the time zone is chosen such that journal data is
available.
The screen above shows the 'Log View' of the Flashback interface. This interface allows
the user to have complete control over the review & rollback process. The user can
choose a point or event in time, review the data and rollback if satisfied. It also allows the
user to control the review at the IO level. Apart from time, the Flashback interface also
has an alternate view called the 'Event View'.
This view gives a different perspective for the user to choose an appropriate event to
review and restore. It also gives a feel of the time by indicating the time of the day
picturesquely. Most importantly it allows the user to freely review both in the forward
and backward directions.
The Log view can be sub-divided into four different panels.
Storage : Continuous Data Protection (CDP) : Time Slider Panel
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The 'Time Slider Panel' shows graphically, the events and snapshots that are journaled.
The slider (1) can be dragged to any point on the line with a resolution of 1 second. The
red dots represent snapshots and the blue dots represent events that were logged. The
orange region prior to the first snapshot indicates a zone where journal data is not
available. Similarly, the blue region indicates the zone where data is available. The slider
can be moved to any given time at which the system needs to be restored. The Main
Control Panel is used to precisely control this recovery time.
Storage : Continuous Data Protection (CDP) : Main Control Panel
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Chapter Seven : Managing the Storage Appliance 163
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