By default, for pair split (Non Split, Steady Split, or Quick Split), the maximum multiple copy processing for each pair is set to 24. However, if you set the Quick/Steady Split Multiplexing option of the local replica option to OFF, the multiplicity can be changed to 1. Make sure to set the Quick/Steady Split Multiplexing option to OFF if the host I/O performance is prioritized. The local replica options can be set using HDvM - SN or CCI.
You can use one of the following methods to split pairs:
|
HDvM - SN |
CCI |
Description |
|---|---|---|
|
Non Split |
paircreate |
Pairs are not split after they are created. |
|
Steady Split |
paircreate –split -fq normal |
When copy of all differential data completes, the pairs are split. |
|
Quick Split |
paircreate –split -fq quick |
Pairs are split immediately after pair split is specified. Use this method if you want to read or write data of the S-VOL immediately after pair split is specified. Remaining differential data is copied to the S-VOL in background after the split. |
|
- |
paircreate –g <group> -m grp [CTG ID] |
Split all pairs in a consistency group at one time. CCI is required for this operation. For details, see the Command Control Interface User and Reference Guide. |