1. You are given 6 data blocks, 3 parity blocks (assuming a parity bit is comput
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Question
1. You are given 6 data blocks, 3 parity blocks (assuming a parity bit is computed over every 2 data bits), and 3 disks. If RAID 5 is used, please decide the layout of data and parity blocks on these disks.
2. Please explain which RAID level you will use for the following applications:
a. A stock trading system. Many transactions (read and write) are running at the same time and it is crucial not to lose any information.
b. A system for managers to analyze sales. The data only gets updated once a day.
c. A video database for people to watch video online. The database has a backup.
Explanation / Answer
Answer 1:
Answer 2:
RAID 5 or 6 for stock trading system:
RAID 6 is a good all-round system that combines efficient storage with excellent security and decent performance. It is preferable over RAID 5 in file and application servers that use many large drives for data storage.
RAID 1 for managers analysing the sales.
RAID-1 is ideal for mission critical storage, for instance for accounting systems. It is also suitable for small servers in which only two data drives will be used.
RAID 0 level is best for the video database for people to watch video:
RAID 0 is ideal for non-critical storage of data that have to be read/written at a high speed, such as on an image retouching or video editing station.
Note: I would like to have your opinion and I will be glad to help you if you looking for more information.
Layout -RAID 5 Disk 1 Disk 2 Disk 3 Data Block 1 Data Block 3 Parity Block 3 Data Block 2 Parity Block 2 Data Block 5 Parity Block 1 Data Block 4 Data Block 6Related Questions
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