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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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Содержание MR Gen10 Plus
Страница 1: ...HPE MR Gen10 Plus Controller User Guide Part Number 30 9E6EB4E3 002 Published April 2022 Edition 2 ...
Страница 10: ...Features Features 10 ...
Страница 19: ...RAID technologies RAID technologies 19 ...
Страница 26: ...Striping Striping 26 ...
Страница 28: ...Mirroring Mirroring 28 ...
Страница 32: ...Parity Parity 32 ...
Страница 45: ...Spare drives Spare drives 45 ...
Страница 50: ...Transformation Transformation 50 ...
Страница 51: ...Array transformations Array transformations 51 ...
Страница 54: ...Logical drive transformations Logical drive transformations 54 ...
Страница 58: ...Drive technology Drive technology 58 ...
Страница 66: ...Security Security 66 ...
Страница 68: ...Simple A Simple erase writes a pattern to the logical drive in a single pass Simple 68 ...
Страница 70: ...Thorough A thorough drive erase operation repeats the Normal drive erase operation three times Thorough 70 ...
Страница 73: ...Reliability Reliability 73 ...
Страница 76: ...Performance Performance 76 ...
Страница 80: ...Cache Cache 80 ...
Страница 97: ...Cable part numbers For more information on cables see the server QuickSpecs Cable part numbers 97 ...
Страница 98: ...Configuration Configuration 98 ...
Страница 106: ...Configuration management Configuration management 106 ...
Страница 117: ...Controller management Controller management 117 ...
Страница 119: ...Advanced controller management Advanced controller management 119 ...
Страница 137: ...Logical drive management Logical drive management 137 ...
Страница 143: ...Drive management Drive management 143 ...
Страница 155: ...Maintenance Maintenance 155 ...
Страница 156: ...System maintenance tools System maintenance tools 156 ...
Страница 160: ...Models Models 160 ...
Страница 172: ...Support and other resources Support and other resources 172 ...