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Selecting RAID for write performance
Selecting RAID for write performance
If your environment requires high write performance, select a RAID type that is optimized for write performance
The chart below shows how RAID 10, 5, 50, 6, and 60 compare to the percent write performance of RAID 0.
The data in the chart assumes that the performance is drive limited and that drive write performance is the same as drive read
performance.
Consider the following points:
RAID 5, 50, 6, and 60 performance assumes parity initialization has completed.
Write performance decreases as fault tolerance improves due to extra I/O.
Read performance is generally the same for all RAID levels except for smaller RAID 5\6 arrays.
The table below shows the Disk I/O for every host write:
Supported RAID levels may vary based on the controller model.
RAID type
RAID type
Disk I/O for every host write
Disk I/O for every host write
RAID 0
1
RAID 10
2
RAID 5
4
RAID 6
6
Selecting RAID for write performance
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Summary of Contents for MR Gen10 Plus
Page 10: ...Features Features 10 ...
Page 19: ...RAID technologies RAID technologies 19 ...
Page 26: ...Striping Striping 26 ...
Page 28: ...Mirroring Mirroring 28 ...
Page 32: ...Parity Parity 32 ...
Page 45: ...Spare drives Spare drives 45 ...
Page 50: ...Transformation Transformation 50 ...
Page 51: ...Array transformations Array transformations 51 ...
Page 54: ...Logical drive transformations Logical drive transformations 54 ...
Page 58: ...Drive technology Drive technology 58 ...
Page 66: ...Security Security 66 ...
Page 68: ...Simple A Simple erase writes a pattern to the logical drive in a single pass Simple 68 ...
Page 73: ...Reliability Reliability 73 ...
Page 76: ...Performance Performance 76 ...
Page 80: ...Cache Cache 80 ...
Page 98: ...Configuration Configuration 98 ...
Page 106: ...Configuration management Configuration management 106 ...
Page 117: ...Controller management Controller management 117 ...
Page 119: ...Advanced controller management Advanced controller management 119 ...
Page 137: ...Logical drive management Logical drive management 137 ...
Page 143: ...Drive management Drive management 143 ...
Page 155: ...Maintenance Maintenance 155 ...
Page 156: ...System maintenance tools System maintenance tools 156 ...
Page 160: ...Models Models 160 ...
Page 172: ...Support and other resources Support and other resources 172 ...