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 17
| 1: | What is point-in-time copy used for? |
| A1: | Answer: To re-create consistent data for business continuity |
| 2: | Can you use host write caching with point-in-time copy? |
| A2: | Answer: Yes, but you must flush host buffers before detaching secondary storage. |
| 3: | Which type of point-in-time copy requires the most storage capacity? |
| A3: | Answer: Whole volume snapshots |
| 4: | True or false: By default, backup systems automatically create historical copies of data. |
| A4: | Answer: False. They make backup copies that are eventually overwritten. You should make separate tapes or tape pools for historical archiving. |
| 5: | True or false: File system snapshots create extra copies of data. |
| A5: | Answer: False. They keep old data blocks from being returned to the free block pool. ... |
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