Computer Associates BABWBR1151S40 User Guide - Page 117

Backup Strategy, Advantages, Backup Recommendations, Using Best Practices

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Backup Recommendations After you determine the size of your restore window, you must consider the affect that your environment and resources will have on your backup strategy: ■ In an environment that has mission-critical data with minimal restore windows, you should perform full backups nightly (or during the hours your server is least active) and incremental backups at mid-day (or during a low production period during the day that is evenly spaced from your full backups). ■ If media usage is a major factor in your backup strategy, either perform full backups daily or full alternating with differential backups daily. ■ In an environment that has non mission-critical data with less aggressive restore windows, you should perform a full backup at least once a week and perform incremental or differential backups on the other days. The following chart includes examples of a few backup strategies and their advantages and disadvantages. Although, for maximum protection, you should perform daily full and incremental backups, for maximum protection, you can customize your backup strategy to suit your organization's needs. The only requirement is that you minimally perform daily backups on work days with a full backup once a week. Backup Strategy Advantages Disadvantages Daily full and incremental backups* High frequency of protection Short restore window High media usage Daily full backups Good frequency of protection Short restore window High media usage Daily backups with a full at least once a week Good frequency of protection Less media usage Varying restore window * Schedule full and incremental backups approximately 12 hours apart. Chapter 6: Using Best Practices 117

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Backup Recommendations
After you determine the size of your restore window, you must consider the
affect that your environment and resources will have on your backup strategy:
■
In an environment that has mission-critical data with minimal restore
windows, you should perform full backups nightly (or during the hours
your server is least active) and incremental backups at mid-day (or during
a low production period during the day that is evenly spaced from your full
backups).
■
If media usage is a major factor in your backup strategy, either perform
full backups daily or full alternating with differential backups daily.
■
In an environment that has non mission-critical data with less aggressive
restore windows, you should perform a full backup at least once a week
and perform incremental or differential backups on the other days.
The following chart includes examples of a few backup strategies and their
advantages and disadvantages. Although, for maximum protection, you should
perform daily full and incremental backups, for maximum protection, you can
customize your backup strategy to suit your organization’s needs. The only
requirement is that you minimally perform daily backups on work days with a
full backup once a week.
Backup Strategy
Advantages
Disadvantages
Daily full and
incremental backups*
High frequency
of protection
Short restore
window
High media usage
Daily full backups
Good
frequency of
protection
Short restore
window
High media usage
Daily backups with a
full at least once a
week
Good
frequency of
protection
Less media
usage
Varying restore window
* Schedule full and incremental backups approximately 12 hours apart.
Chapter 6: Using Best Practices
117