Restoring Tips; Restoring Volumes For The Latest Date; Restoring Volumes For A Specific Date - HP BB118BV - StorageWorks Data Protector Express Package User's Manual & Technical Reference

Restoring Tips

This section provides tips for restoring files and volumes.

Restoring volumes for the latest date

If you have used a default schedule and have run backup jobs as scheduled, you can easily and
simply restore files as they appeared the last time a backup job was run. Simply select the volumes or
files you wish to restore on the Selection page of a restore job. The latest version of each file will be
automatically restored to the volume. Data Protector Express will prompt you for whatever tapes are
needed to complete the restore job.
Restoring volumes for a specific date
You can restore volumes and directories as they appeared on a particular date as long as that date is
within the full data recovery period. Recall that the full data recovery period is the number of days prior
to the data loss for which any and every file backed up can be recovered. To restore volumes to the last
backup date, refer to
Different schedules provide full data recovery periods for varying numbers of days prior to the last
backup. For example, a GFS 30-tape job can reconstruct the data for any day of the past three weeks,
while a simple 4-tape backup only provides for reconstruction of the past two days.
You can reconstruct the data for any particular day during the full data recovery period. Consider this
example. Suppose you want to restore a particular volume as it appeared on Wednesday morning.
Providing the date falls within the full data recovery period, there are three possible scenarios for restoring
the volume as it appeared at the beginning of business on Wednesday: either (1) restore from a full
backup tape; (2) restore from a full backup tape and the most recent differential tape; or (3) restore from
a full backup tape and all of the incremental tapes from the previous full backup and the date in question.
If you ran a full backup job the previous evening
restore job and selecting the appropriate volume on the selection page of the restore job. Initially, the
latest version of these files will be selected. You must select the versions according to the desired date,
in this case the Tuesday before the Wednesday. To do so, set the Backup range filter to the desired
date. Begin by clicking the Selection Filters button on the tool bar of the restore jobs Selection page.
The Selection Filters dialog box will appear. Then click on the Browse button next to the field. Specify
Tuesday's date as the starting and ending date in the Date Range dialog box.
If you ran a differential job the previous evening
job must restore all of the files from the previous full backup job; the second restore job must restore
files from the previous evening's differential job.
Suppose in this example that the last full backup was done on Friday evening and that a differential job
was run on Tuesday evening. To restore files as they appeared on Wednesday morning, follow these
steps.
First, create a restore job, select the appropriate volume and then set the Backup range on the Selection
Filters dialog box to match Friday's date. Name the job with an appropriately identifying name, such
as "Restore from Friday's Full Backup".
Second, copy the first restore job, rename it with an identifying name and change the Backup range
date to match Tuesday's date.
Run the two jobs, being certain to run them in the proper order.
If you ran an incremental job the previous evening
first job must restore all of the files from the previous full backup job; the other jobs must restore all of the
files from all of the previous incremental jobs between the full backup and the date in question.
Suppose in this example that the last full backup was done on Friday evening and that incremental jobs
were run on Monday and Tuesday evenings. To restore the volume as it appeared on Wednesday
morning, follow these steps.
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Tips, Techniques and Strategies
Restoring volumes for the latest date.
You can run one restore job. Begin by creating a new
You need only run two restore jobs. The first restore
You will need to run two or more restore jobs. The