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The Introduction of RAID
A-5
User’s Manual
Disk 0 Disk1 Disk 2 Disk3
3 Parity
A 2
A 1
A 0
B 3
2 Parity
B 1
B 0
C 3
C 2
1 Parity
C 0
D 3
D 2
D 1
0 Parity
ABCD
DATA
D Block
C Block
B Block
A Block
RAID Level 5
Independent Data disks with
distributed parity blocks
RAID 5 also stripes data at a block level
across several drives. But it distributes
parity among the drives, which avoids the
write bottleneck caused by the single
dedicated parity drive. Each drive takes
turns storing parity information for a
different series of stripes. RAID 5 can
execute read/write to disk drives either in
parallel or independently.
Summary of Contents for Hot Rod 100 Pro
Page 2: ......
Page 32: ...4 12 Chapter 4 Hot Rod 100 Pro ...
Page 40: ...A 8 Appendix A Hot Rod 100 Pro ...
Page 42: ...B 2 Appendix B Hot Rod 100 Pro ...