Computer Organization Homework: RAID Technology and Addressing Modes

This assignment delves into the realm of computer organization, focusing on two key areas: RAID (Redundant Array of Independent Disks) technology and addressing modes. The assignment explores various RAID levels (RAID 2, 3, 4, 5, and 6), discussing their characteristics, advantages, and disadvantages, with a specific recommendation for BSKL, a local trending company. Factors influencing RAID selection, such as application performance, capacity, cost, availability, and scalability, are thoroughly examined. The second part of the assignment covers different addressing modes, including immediate, direct, indirect, register, and register indirect addressing, providing concise explanations of each. The document concludes by emphasizing the importance of RAID in enhancing data transfer performance and recommends RAID 4 for BSKL due to its enhanced data security and performance characteristics. References include books and journals related to RAID technology.

COMPUTER ORGANIZATION

Table of Contents
INTRODUCTION...........................................................................................................................1
A) RAID .....................................................................................................................................1
B) Factors of RAID.....................................................................................................................1
C) Suitable RAID for BSKL ......................................................................................................2
B) Addressing modes..................................................................................................................2
CONCLUSION................................................................................................................................2
REFERENCES................................................................................................................................3

INTRODUCTION
RAID is a technology it provides higher performance of data storage. RAID stands for
redundant array of inexpensive disks. This consists two or more drives to store data in parallel
way. It increases the performance of data storage. There are different types of RAID and each
have different types of characteristics. It is used in critical situation when there are collision in
storing the data in the system. BSKL is a local trending company in the world.
A) RAID
This technology is use to measure capacity, speed and performance of the system. There
are many levels of RAID that is used by the BSKL as follows:
RAID 2
This RAID is used rarely in the companies. A disk are synchronized by the controller to
spin at the same angular orientation. It cannot provide services simultaneously. They provide
higher rate of data transfer (Call and et.al., 2014).
RAID 3
One of the best and main characteristics of this RAID is it cannot provide services
multiple request simultaneously which happens because they use single block of memory.
Applications that create small write and read from different disk locations that will give the
worst performance at this level.
RAID 4
This RAID has good performance of data transfer of different reads when random writes
is low due to the write all parity to a single disk (Syu, 2014).
RAID 5
In this types of RAID there is high performance of write when all the members involving
in serving of write requests.
RAID 6
They provide higher performance of both read and write.
B) Factors of RAID
Application performance: By comparing all the RAID, RAID 4 has higher performance of
transferring the data.
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Capacity: RAID 3 has capacity as compared to another RAID's. They provide single block of
memory data transfer so transmission is easy in this type of RAID. It has much capacity of
storing data because they used only one block.
Cost: RAID 3 has low cost because they use single block of drive to transfer a data in the system
(Wong and Salahuddin, 2015).
Availability and scalability: availability and scalability is high in RAID 3 because the data
transmission is easy. It can transfer data in single unit and there is no collision between the
informations.
Advantages and disadvantages: Main advantage of RAID is that they provide effective and
efficient data transmission of data in the system. Disadvantage is that sometime there is some
collision between the units during the data transmission.
C) Suitable RAID for BSKL
Suitable RAID system for BSKL is RAID 4 because they provide more security to the
data. It has higher performance on both the sides write and read. It will enhance and increase the
performance during the transmission.
B) Addressing modes
 Immediate addressing: This operand has immediate value that is stored in the
instructions. Location of decimal 15 in the address field.
 Direct addressing: The address of an operand is embedded in the code of instructions.
Location of decimal number is in memory location 15.
 Indirect addressing: Address of the operand is content in the memory location and the
location address exits in the instruction (Horn, 2013). Memory location whose address is
in memory location 15.
 Register addressing: Number of the CPU register is enabled in the instruction and this
register contains a value of operand. Location of decimal number is in register 15.
 Register indirect addressing: A register the number that is included in instruction code
and also contains address of the operand (Bartlett, Fairhurst and Scales, 2014). Memory
location whose address is in register 15.
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CONCLUSION
RAID is used in the system that will help to increase a performance of the data transfer.
BSKL should use RAID 4 to enhance a performance of the system. It will also help to increase a
data transfer rate of the particular system.
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REFERENCES
Books and journals
Call, M. and et.al., 2014 Western Digital Technologies, Inc.,. System and method for improving
a data redundancy scheme in a solid state subsystem with additional metadata. U.S. Patent
8,700,951.
Syu, M. M. L., 2014. Western Digital Technologies, Inc.,System and method for data error
recovery in a solid state subsystem. U.S. Patent 8,700,950.
Horn, R.L., Western Digital Technologies, Inc., 2013. System and method for maintaining a
data redundancy scheme in a solid state memory in the event of a power loss. U.S. Patent
8,615,681.
Wong, H. S. P. and Salahuddin, S., 2015. Memory leads the way to better computing. Nature
nanotechnology. 10(3), pp.191-194.
Horn, R.L., 2013 Western Digital Technologies, Inc. System and method for a data reliability
scheme in a solid state memory. U.S. Patent 8,601,313.
Bartlett, E. J., Fairhurst, M. J. and Scales, W. J., 2014 International Business Machines
Corporation,.Methods for redundant array of independent disk (RAID) storage recovery. U.S.
Patent 8,826,065.
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