4. Suppose a system has 5 drives as in Figure 3. The system needs to be configured as RAID 6. Given the block of data in the Figure 4 below, design them to allow dual redundancy. 1 2 3 4 Diskl 5 6 7 8 Disk2! ABCDEFGHIJKL Figure 4: Block of data Location 3 = 9 10 11 12 Disk3 Figure 3: System with 5 disk drive The number in the disks are the location. E.g. number 5 is referring to location 5 Location 15 = Location 17 = 13 14 15 16 Disk4 Block of data 17 18 19 a) Determine which block of data are allocated at location 3, 15 and 17 Answer format: Write only the letter with no white space. E.g. at location 1, A is written to represent data block A. Use uppercase letter P to represent parity block. 20 Disk5 >) If Diskl and Disk4 failed, determine which location(s) should be used to regenerate the data at location 2. Answer format: Write only the letter with no white space. If your answer has more than one location separate the letters with a comma e.g. location 1 and location 2 are written as 1,2 with a comma with no white space
4. Suppose a system has 5 drives as in Figure 3. The system needs to be configured as RAID 6. Given the block of data in the Figure 4 below, design them to allow dual redundancy. 1 2 3 4 Diskl 5 6 7 8 Disk2! ABCDEFGHIJKL Figure 4: Block of data Location 3 = 9 10 11 12 Disk3 Figure 3: System with 5 disk drive The number in the disks are the location. E.g. number 5 is referring to location 5 Location 15 = Location 17 = 13 14 15 16 Disk4 Block of data 17 18 19 a) Determine which block of data are allocated at location 3, 15 and 17 Answer format: Write only the letter with no white space. E.g. at location 1, A is written to represent data block A. Use uppercase letter P to represent parity block. 20 Disk5 >) If Diskl and Disk4 failed, determine which location(s) should be used to regenerate the data at location 2. Answer format: Write only the letter with no white space. If your answer has more than one location separate the letters with a comma e.g. location 1 and location 2 are written as 1,2 with a comma with no white space
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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5c
Transcribed Image Text:4. Suppose a system has 5 drives as in Figure 3. The system needs to be configured as RAID 6. Given the block of data in the Figure 4 below, design them to allow dual redundancy.
2
3
4
Disk1
5
6
7
8
Disk2
Figure 3: System with 5 disk drive
The number in the disks are the location. E.g. number 5 is referring to location 5
•¶••••••••
Figure 4: Block of data
Location 3 =
9
10
11
12
Disk3
Location 15 =
Location 17 =
13
14
15
16
Disk4
Block of data
a) Determine which block of data are allocated at location 3, 15 and 17
Answer format: Write only the letter with no white space. E.g. at location 1, A is written to represent data block A.
Use uppercase letter P to represent parity block.
17
18
19
20
Disk5
b) If Diskl and Disk4 failed, determine which location(s) should be used to regenerate the data at location 2.
Answer format: Write only the letter with no white space. If your answer has more than one location separate the letters with a comma e.g. location 1 and location 2 are written as 1,2 with a
comma with no white space
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