Mastering: System Center Data Protection Manager 2007

Appendix A. The Bottom Line

Chapter 1: Data Protection Concepts

Understand general data protection concepts. Understanding the concepts that apply to any dataprotection scenario makes it easier for you to identify the challenges you face in your environment.

Master It

1. Name the common factors affecting the design of traditional backup and restore solutions.

2. What are the two common storage technologies used for backup and restore? What are two advantages and disadvantages for each technology?

3. Describe how D2D2T (disk-to-disk-to-tape) works.

4. Name the two replication strategies and explain how they differ.

5. Describe the three levels of replication.

Solution

1. The common factors include bandwidth, capacity, cost, location, metadata, reliability, security, service level agreements, and speed; however, you may have additional concerns in your environment.

2. The two most common storage technologies are tape and disk; other removable media such as CDs and DVDs are used by individual users or smaller companies, but they do not scale well to a network environment. See Table 1.2 for the comparison of disk and tape.

3. Initial backups from production resources are made to a temporary holding area located on disk storage and held for a short period of time; any restore requests made during this time can be quickly and easily fulfilled from this storage area, taking advantage of disks' random access characteristics and speed. Once the defined time has passed, the data is transferred to tape and removed from the ...