Write Performance; Figure 4. Raid 5 Configuration Example - 3Ware 7000-2 - Escalade RAID Controller User Manual

3ware Escalade ATA RAID Controller User Guide
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Figure 4. RAID 5 Configuration Example

R5 Fusion
improves RAID 5 write performance
3ware's R5 Fusion significantly improves RAID 5 write perfor-
mance for both large sequential and small random transactions.
This advanced block caching firmware technology is combined
with StorSwitch to deliver extremely high performance for RAID 5
write operations. This performance improvement is applicable to
only the first RAID 5 array on the RAID controller. Additional
RAID 5 arrays on the RAID controller will not benefit from the R5
Fusion technology.
Note:
7500 and 8500 ATA RAID Controllers.
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RAID 5
0 parity
B0
A1
1 parity
A2
B2
A3
B3
A4
B4
A Blocks
B Blocks
TM
Technology significantly
R5 Fusion is available only with Escalade
D0
C0
D1
C1
2 parity D2
3 parity
C3
D4
C4
C Blocks D Blocks
E0
E1
E2
E3
4 parity
E Blocks
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