December 2004
Beginner
480 pages
11h 54m
English
book
Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems
by Marc Farley
Content preview from Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems
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Chapter 8
| 1: | Why is data redundancy important? |
| A1: | Answer: It provides protection from data loss. |
| 2: | What are three different forms of redundancy? |
| A2: | Answer: Duplicate, parity, and delta (difference) |
| 3: | What's the first step in using delta redundancy? |
| A3: | Answer: Make a complete copy of the data. |
| 4: | List four locations in the I/O path that could contain mirroring operators. |
| A4: | Answer: Host software, HBAs, network systems, and subsystem controllers |
| 5: | Why can't two targets in a mirrored pair have different sizes (capacities)? |
| A5: | Answer: File systems are designed to manage a single address space. This means that all storing (block) operations are duplicated within the boundaries of that address space. |
| 6: | How can mirroring improve system performance? |
| A6: ... |
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