STUPIDSID
1(a)
What is a data center? Explain key characteristics of center elements.
10 M
1(b)
Explain the various components of disk drive.
6 M
1(c)
Consider a disk I/O system in which an I/O request arrives at the rate of 80IOPS. The disk service time is 6 ms. Compute the following:
i) Utilization
ii) Response time
iii) Average queue size
iv) Time spent by a request in a queue.
i) Utilization
ii) Response time
iii) Average queue size
iv) Time spent by a request in a queue.
4 M
2(a)
Explain the various techniques on the basis of which RAID levels are defined.
9 M
2(b)
An application has 1000 heavy users at a peak of 2 IOPS each and 2000 typical users at a peak of 1 IOPS each, with a read/wirte ratio of 2:1, It is estimated that the application also experience an overhead of 10 percent for other workloads. Calculate the IOPS requirement for RAIS1, RAID5 and RAID6.
6 M
2(c)
With a neat diagram, differentiate between write through and write back cache.
5 M
3(a)
Explain fiber channel with respect to protocol stack, zoning and login types.
10 M
3(b)
Write a note on SCSI-3 architecture.
10 M
4(a)
What is NAS? Explain the benefits of NAS.
10 M
4(b)
Differentiate between Native and Bridged ISCSI connectivity.
6 M
4(c)
Write a note on ISCSi PDU.
4 M
5(a)
With neat diagrams, explain the concept of object storage and retrieval in CAS systems.
10 M
5(b)
What is storage virtualization? Differentiate between block level and file level virtualization with neat diagrams.
10 M
6(a)
What is business continuity? Explain BC planning life cycle with a neat diagram.
10 M
6(b)
Explain the reasons for which backup is performed.
10 M
7(a)
Describe the various storage array basd local replication technologies.
10 M
7(b)
What is storage array based remote replication? Differentiate between synchronous and asychronous replication mode in it.
10 M
8(a)
Explain the four security attributes which are under threat.
4 M
8(b)
Write a note on risk triad.
6 M
8(c)
Describe the categories on the basis of which storage management is classified.
5 M
8(d)
Write a note on accessibility monitoring.
5 M
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