IMS, in support of HA, supports the concept of rolling maintenance where the IMS systems would be shutdown one at a time so that changes/maintenance can be applied. Once applied the system is restarted and the next IMS system is shutdown until we cycle thru all IMS members of the IMSplex. Unfortunately, while IMS supports HA & rolling maintenance Infosphere does not. It means our automation will need to restart Infosphere on a separate lpar from where IMS maintenance is being applied and potentially repeat the process as maintenance works its way thru the IMSplex. Having Infosphere support HA would simplify the IMS maintenance procedures.
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