change hyper_metro_pair write_mode
Function
The change hyper_metro_pair write_mode command is used to set the write mode of a HyperMetro pair to tune the performance of HyperMetro IO lock.
Format
change hyper_metro_pair write_mode pair_id=? write_mode=? [ prefetch_mode=? | prefetch_size=? ]
Parameters
Parameter |
Description |
Value |
|---|---|---|
pair_id=? |
ID of the HyperMetro pair. |
Run the "show hyper_metro_pair general" command without any parameters to obtain the value. |
write_mode=? |
Write mode of host. |
The value is "none" or "sequential" or "reverse" or "random", where:
|
prefetch_mode=? |
Prefetch mode. |
The value is "max" or "scale" or "block_kb" or "block_mb" or "block_gb", where:
|
prefetch_size=? |
Prefetch size. |
- |
Views
Developer view, Engineer view
Usage Guidelines
None
Example
Set write mode as random, and the max prefetch size is 64 KB for a HyperMetro pair whose ID is "1".
engineer:/>change hyper_metro_pair write_mode pair_id=1 write_mode=random prefetch_mode=block_kb prefetch_size=64
Command executed successfully.
System Response
None
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