BT9003, Data Storage management

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ASSIGNMENT

PROGRAM	BSc IT
SEMESTER	FIFTH
SUBJECT CODE & NAME	BT9003, Data Storage management
CREDIT	4
BK ID	B1190
MAX.MARKS	60

Q.1 State the various reasons for data loss in some business corporations.

Answer: Risk is a measure of potential economic loss, lack of return on an investment or asset, or material injury. Another way to state this is that risk is a measure of exposure to harm.

The Effect of Lost Data on Business Operations

Companies recognize that data loss represents a business risk. Even if a monetary value is not assigned to the data, the negative effects on operations can be significant. In many cases, corporate operations can be so adversely affected that companies feel the need to mention the risk in regulatory filings and shareholder reports.

Q.2 How ILM supports implementation of regulatory concerns? Explain with an example.

Answer: Informatica ILM Nearline is highly scalable, high-performance software that empowers IT organizations to cost-effectively manage the explosion of data growth in their SAP BW systems. The software enables IT teams to easily and safely move infrequently-accessed data from SAP BW into an integrated nearline data store. Nearlined data can then be accessed seamlessly from the SAP BW interface using the same access methods that were used when the data was still in production. By reducing the size of the production database,

Q.3 Describe the two product classes in storage networking.

Answer: Storage networking is the practice of linking together storage devices and connecting them to other IT networks. Storage networks provide a centralized repository for digital data that can be accessed by many users, and they use high-speed connections to provide fast performance. It's most common to find storage networks in enterprise settings, although some vendors do sell networked storage products for consumers and small businesses. The phrase "storage networking" is commonly used in reference to storage area networks (SANs). A

Q.4 Briefly explain redundant I/O path elements.

Answer: Multipath I/O (MPIO) is a Microsoft framework designed to mitigate the effects of a host bus adapter (HBA) failure by providing an alternate data path between storage devices and a Windows operating system. MPIO enables up to 32 alternate paths to add redundancy and load balancing for Windows storage environments.

Pathing is a networking approach used to address the specific needs of storage networks by changing the way that communication paths are managed and organized. Unlike connection failures in message networks -- which generally just require that the connection be retried -- in storage networks, a failure is more likely to cause a system crash. Storage

Q. 5 Describe file system hierarchy and parsing the file system.

Answer: The File system Hierarchy Standard (FHS) defined the directory structure and directory contents in Unixand Unix-like operating systems. It is maintained by the Linux Foundation. The latest version is 3.0, released on 3 June 2015.  Currently it is only used by Linux distributions. A File System defines a logical way to read and write information. In this way, it can be considered a specification. Most PC file systems are based off of the desktop concept of files and folders.

There are alot of different kinds of file systems. Some are widely use (Like FAT12, FAT16, FAT32, NTFS, ext (Linux), HFS (Used in older MACs); other file systems are only used by specific companies for in house use (Like the GFS - Google File System). Some file systems are used in networking only (NFS). You can also develop and design

Q.6 Explain RAID 0, RAID1 and RAID 0+1.

Answer: On most situations you will be using one of the following four levels of RAIDs.

·         RAID 0

·         RAID 1

·         RAID 10 (also known as RAID 1+0)

In all the diagrams mentioned below:

·         A, B, C, D, E and F – represents blocks

·         p1, p2, and p3 – represents parity

RAID LEVEL 0: Following are the key points

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