VSAM ⭐ Featured
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Q: How to handle SMS conversion?

Answer:
SMS manages storage automatically. Migrate VSAM to SMS: DATACLAS, STORCLAS, MGMTCLAS. ACS routines for assignment. Remove explicit VOL/UNIT. Benefits: automation, management.
sms conversion migration
JCL
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Q: Explain SMS-managed storage

Answer:
SMS (Storage Management Subsystem) manages dataset placement. Specify STORCLAS, MGMTCLAS, DATACLAS in DD. DATACLAS sets DCB attributes, STORCLAS controls placement, MGMTCLAS defines retention. SMS uses ACS routines for assignment.
sms storage management
JCL
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Q: What is MGMTCLAS parameter?

Answer:
MGMTCLAS assigns SMS management class. Controls migration, backup, retention. MGMTCLAS=classname. Defines data lifecycle. HSM uses management class. Installation-defined policies.
mgmtclas sms management