Long description

Figure a: RAID level 0: It contains a set of four cylinders which is divided into three sections. The upper sections of each are labeled strip 0, strip 1, strip 2, and strip 3. The middle sections are labeled strip 4, strip 5, strip 6, and strip 7. The lower sections are labeled strip 8, strip 9, strip 10, and strip 11.

Figure b: RAID level 1: It contains two sets of four cylinders which are divided into three sections. Each set is labeled similarly to the previous figure. The second set of cylinders is shaded.

Figure c: RAID level 2: It contains a set of seven cylinders which are divided into three sections. The upper sections of each are labeled Bit 1, Bit 2, Bit 3, Bit 4, Bit 5, Bit 6, and Bit 7.

Figure d: RAID level 3: It contains a set of five cylinders which are divided into three sections. The upper sections of each are labeled Bit 1, Bit 2, Bit 3, Bit 4, Bit 5.

Figure e: RAID level 4: It contains a set of five cylinders which are divided into three sections. For the first four cylinders: The upper sections of each cylinder are labeled strip 0, strip 1, strip 2, and strip 3. The middle sections are labeled strip 4, strip 5, strip 6, and strip 7. The lower sections are labeled strip 8, strip 9, strip 10, strip 11.

For the fifth cylinder: The sections are labeled P O 3, P O 7, P 8 to 11 from top to bottom.

Figure f: RAID level 5: It contains a set of five cylinders which are divided into five sections. The sections of each cylinder are labeled in the following way. Section 1: strip 0, strip 1, strip 2, strip 3, P 0 to 3. Section 2: strip 4, strip 5, strip 6, P 4 to 7, strip 7. Section 3: strip 6, strip 9, P 8 to 11, strip 10, strip 11. Section 4: strip 12, P 12 to 15, strip 13, strip 14, strip 15. Section 5: P 16 to 19, strip 16, strip 17, strip 18, strip 19.

Figure g: RAID level 6: It contains a set of five cylinders which are divided into five sections. The sections of each cylinder are labeled in the following way. Section 1: strip 0, strip 1, strip 2, P 0 to 2, P prime 0 to 2. Section 2: strip 3, strip 4, P 3 to 5, P prime 3 to 5. Section 3: strip 6, P 6 to 8, P prime 6 to 8, strip 7, strip 8. Section 4: strip 12, P 12 to 15, strip 13, strip 14, strip 15. Section 5: P 9 to 11, P prime 9 to 11, strip 9, strip 10, strip 11.