Providing Reliability For Raid 5 Array Using Different Techniques

RAID (redundant array of independent disks), is a method of staring virtual data on separate disk drives that combine to make a single logical unit for the purpose of data redundancy. Data is distributed to across the drives depending on the required level of performance and redundancy. There can be up to 6 RAID levels. RAID level 1 consists of data mirroring without parity. Data is written identically to two drives. When the data is requested to every drive in the set then it will be serviced by the drive that read the information first. This method is slow because if one drive needs updated then the other drive will need to be too. If one drive fails to function, it does not matter because the second drive can still produce the same output. RAID 2 consists of bit-level striping

Storage of data plays a major role in improving the performance of a company and this can happen either offline or online and in various formats.

The different information systems are filing cabinets where hard copies are stores or electronically which can be saved changes can

Hard Disc Drive: a HDD is like a person's long term memory. it is used to store any type of data from files to applications. The data on a HDD is non-volatile, which means the data will stay on the disc even if the computer is switched off. A SSD is another way to store data, but it is faster than a HDD because there are no moving parts.

1.1) Give 5 types of hardware resources and five types of data or software resources that

The first medium I want to cover is a hard-drive that is used inside computers and servers. A hard-drive can be broken up into different partitions, which sets up a volume with a single file system and a unique drive letter. These partitions of the hard-drive are kept track in a table called a partitions table. A hard-drive uses NTFS which breaks the drive into sectors of 512 bytes. These different sectors are stored

Scientific data storage: COSHH records; scientific data; scientific apparatus records; waste disposal records; health and safety checks; training records; quality assurance data; report records; specification levels; sample throughput and management; security, Data Protection Act.

[17] S. Quinlan and S. Dorward. Venti: a new approach to archivalstorage. In Proc. USENIX FAST, Jan 2002.

The main purpose of storing information is for easy retrieval in the future when it is required. Storing certain information may be part of company policy. There will be procedures in place in order to make sure files are stored correctly and in line with data protection. Depending on the type of information, information can be stored in either filing cabinets or electronically. Depending on the nature of the business, different types of information will have to be stored, for example a legal practice needs information such as court

Storing information is the process where information is deposited or stored in a storehouse (cabinets, HDD, memory stick, etc) and retrieving information is the process of obtaining the stored information resources relevant to the needs.

The main categories of information and data would be internal data and external data. Internal data is used within a hospital or organization data base for the sole purpose of storing important client’s data. External data is portable storage used for adding information to the organization.

One of the most common questions that you find on Google is whether or not having drives in a RAID 0 array can later be converted to RAID 5. Some people have manually copied things in this drive as a form of getting some type of backup, but having a complete backup of RAID 0 can be tricky. Can you convert a RAID 0 to a RAID 5? For some people, RAID 5 sounds appealing because you can have 6TB instead of having just four for your backup.

It is the type of disk in which the space is fixed. it doesn’t matter how much data you store.

storage and retrieval system, in any form or by any means, whether electronic or mechanical, now known or hereinafter invented, without the express written permission of

Computer systems are classified on the basis of CPU, storage capacity, I/O capacity, and number of users simultaneously using a system, and an application software.