Glenn,

Is there any safe way to test HSM exits without having a TEST LPAR?  So if I 
only had an LPAR but needed to validate my code for an HSM Exit, any way to do 
that safely?  Or would it be safer to bring up a new sysres set with the exits? 
 Or a new LPAR for testing?

Thanks

Lizette


> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On 
> Behalf
> Of Glenn Wilcock
> 
> No.  You should not attempt to start two distinct HSMs within the same LPAR.  
> Multiple
> HSMs within the same LPAR are only supported when they share the same control 
> data
> sets and the secondary hosts are started with the HOSTMODE=AUX parameter.  A
> good example of why you can't have distinct HSMs is Recall.  HSM intercepts 
> Open
> requests for migrated data sets and recalls them.  You can't have two 
> distinct HSMs
> fighting over a Recall.  That is just one issue of many (serialization on 
> functions & data
> sets, other intercepts, etc)
> 
> Glenn Wilcock
> DFSMShsm Architect
> 

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