VTU Computer Science (Semester 7)
Storage Area Networks
December 2016
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1(a) Discuss the key characteristics of a Data Centre, with a neat diagram.
6 M
1(b) What is information life cycle management? Describe ILM implemetation in detail, with its benefits.
10 M
1(c) Consider a disk I/O system in which I/O request arrives at the rate of IOPS. The disk service time is 6 ms. Compute i) Utilization I/O controller ii) Total response time.
4 M

2(a) Describe RAID levels with reference to nested RAID, RAID 3, RAID 5 with neat diagram.
10 M
2(b) With a neat diagram, explain the structure of read and write operations in cache.
10 M

3(a) Explain connectivity options of FC architecture with relevant diagram.
10 M
3(b) Explain the components of ISS with reference to LUN and LUN masking with diagram.
6 M
3(c) Explain FC frame.
4 M

4(a) Describe NAS implementation and benefits with neat diagram.
10 M
4(b) What is iSCSI? Exlain protocol stack with neat diagram.
10 M

5(a) Explain object strorage and retrieval in CAS with suitable diagrams.
10 M
5(b) Discuss storage virtualization types in detail and also discuss its challenges.
10 M

6(a) What is information availability? Explain how information availability is defined and measured.
8 M
6(b) Describe the failure analysis in BC. Mention some important BC technology solutions.
12 M

7(a) Explain Pointer based virtual replication with respect to write to source and write to target with neat diagram.
12 M
7(b) What is remote replication? Explain different modes of remote replication with neat diagram.
8 M

8(a) Write a note on risk traid. Explain in detail.
10 M
8(b) Explain storage management activities in detail, with example.
10 M



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