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Status Future consideration
Workspace z/OS
Categories DFSMS HSM
Created by Guest
Created on Apr 6, 2019

RELATED IDEAS

Add Compaction information to HSM FSR SMF records

The SMF type 14/15 records normally contain the information about whether sequential data sets are compressed or not, and if they are, what type of compression as used. However, HSM uses DSS to process sequential data sets from Primary devices - DSS does not open the data sets, so no type 14/15 records are created. Similarly, no 42.6 records are created. The HSM FSR SMF records provide information about the primary data sets, but NOT whether they are compressed or not. As a result, is it difficult, if not impossible, to accurately predict the benefit that zEDC would provide for HSM.

Idea priority High
  • Guest
    Reply
    |     Sep 27, 2019

    OA57834 adds fields to the FSR record to indicate if a source data set was in a compressed format when it was selected for migration. This RFE is remaining open due to a request for the FSR to additionally indicate the type of compression.

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