Example 1
Switching the active policy from Policy A to Policy B produces the following results:
iCap restores only groups or LPARs that existed in Policy A but not in Policy B.
Consequently, switching the policy causes iCap to restore only SYSC.
- SYSA and SYSB (common to both the old policy and the new) remain at their current value. They are not restored until iCap stops managing them, or the master PAS terminates.
Example 2
You use a MODIFY command to change the RESTORE parameter to NO while the master PAS is running. If you switch the active policy from Policy A to Policy B, SYSC is not restored (meaning the DCs and GCLs do not change).
If the master PAS terminates or iCap switches from manage mode, the results are as follows:
- If RESTORE=NO, SYSA and SYSB are not restored. When you restart the master PAS, iCap uses the DC and GCL values that existed when the PAS terminated, but the original values for SYSA and SYSB are lost.
- If you change back to RESTORE=YES (before the PAS terminates), SYSA and SYSB are restored, but SYSC does not change.
Examples of how RESTORE affects DCs and GCLs during an unplanned IPL
The following examples illustrate how the RESTORE parameter affects DCs and GCLs during an unplanned IPL. For an description of a planned IPL vs an unplanned IPL, see Changing-the-RESTORE-parameter.
Example 1
Assume that iCap is managing LPARs SJSC and SJSD in a policy. When iCap is initialized:
- SJSC has a DC of 50
- SJSD has a DC of 50
- MSU limit is 90
- RESTORE=YES
iCap starts managing the policy and sets the SJSC DC to 35 and the SJSD DC to 55.
In a planned IPL, iCap restores SJSC to a DC of 50 and SJSD to a DC of 50. However, in an unplanned IPL, iCap cannot correctly save and restore DC and GCL values. DCs and GCLs are left at the values they were when the system shut down. In this case, the DC of SJSC is set to 35 and the DC of SJSD is set to 55.
Example 2
(BMC.AMIOPS.SPE2204)
Assume that RESTORE=POL is defined in the started PAS parameters, and the following values are defined for the Restore parameter at the LPAR level:
- SYSA, 300
- SYSB, 100
- SYSC, not defined
Assume that iCap experiences an unexpected IPL. When the master PAS terminates, the DCs are set as follows:
- SYSA and SYSB are restored to the value defined in the Restore parameter.
- SYSC does not have a defined Restore value. Its DC value remains as it was when the PAS terminated.
Examples of how iCap restores values in MLC and TFP mode
(BMC.AMIOPS.SPE2210)
The following examples illustrate how iCap restores values when running in MLC or TFP mode:
Example 1
Assume that RESTORE=POL is defined in the started PAS parameters, and the following values are defined for the Restore parameter at the LPAR level:
- SYSA, 300
- SYSB, 100
- SYSC, 100
Important
Regardless of the Management mode (MLC or TFP), you specify restore values in MSUs.
If iCap is running in MLC mode, the values are restored as specified in MSUs (SYSA to 300, SYSB to 100, and SYSC to 100).
If iCap is running in TFP mode, the values are restored in 100th of a CP (SYSA to 3.00, SYSB to 1.00, and SYSC to 1.00).