Chapter 16


1:

What are the two kinds of cluster storage designs?

A1:

Answer: Shared everything and shared nothing

2:

Why is locking more important for a cluster file system than a traditional file system?

A2:

Answer: The cluster file system can have multiple systems trying to access the same data.

3:

True or false: You typically do not have to worry about data in host buffers with a cluster file system.

A3:

Answer: False. You have to account for all cached data.

4:

Why are SANs valuable for cluster file systems?

A4:

Answer: They are the easiest way to connect all systems to all storage.

5:

True or false: NAS clusters are used primarily to increase storage capacity.

A5:

Answer: False. They are used primarily for high availability.

6:

What is the main difference between a cluster file system and a DFS farm?

A6:

Answer: There is no failover in a DFSfarm.

7:

What are two ways to implement a lock manager for a distributed file system?

A7:

Answer: Distributed or centralized

8:

What is the purpose of direct I/O?

A8:

Answer: To prevent host systems from caching data for database applications

9:

Database logs are an example of what kind of redundancy technique?

A9:

Answer: Delta or difference redundancy



Storage Networking Fundamentals(c) An Introduction to Storage Devices, Subsystems, Applications, Management, a[... ]stems
Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and File Systems (Vol 1)
ISBN: 1587051621
EAN: 2147483647
Year: 2006
Pages: 184
Authors: Marc Farley

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