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Status Not under consideration
Workspace z/OS
Categories DFSMS SMS
Created by Guest
Created on Mar 18, 2015

Opportunity to set the data tier in the DASD subsystems using DFS

At the moment, we have the chance to define all kind of attributes for data sets, by using DFSMS Data Class, Storage Class and Management Class. We need an enhancement for the DFSMS classes, to also control the tiering in the DASD subsystem Now, the DS8 subsystem moves the cold data onto slower volumes or hot data onto fast volumes. We want to control this movement with DFSMS definitions. So, when a data set has a storage class that requires very fast responses, we don't want it to be moved away from the fast volumes.

Idea priority High
  • Guest
    Reply
    |
    Jan 18, 2023
    This item is a valid requirement but unlikely to be given high enough priority to be placed into the product plan. If this requirement is high value, please re-open it, or open a new requirement.
  • Guest
    Reply
    |
    Jan 13, 2023

    Not sure if this has progressed in terms of integrating it into DFSMS constructs, but I recall back in 2018 that EasyTier Application provided some means to control tiering for selected datasets.

    DS command-line interface (DS CLI)

    Specific DS CLI commands can be run by the storage administrator or integrated into the

    customer application to generate directive data placement requests. For specific

    examples, see 3.2, “Easy Tier Application management by using the DS CLI” on page 19.

    _ ESSNI

    ESSNI is the communication channel between the host layer and Easy Tier Application on

    the DS8870 storage system. The directive data placement requests are received by

    ESSNI and sent to the Easy Tier Application server.

    _ z/OS Data Facility Storage Management System (DFSMS) functions

    With DS8870 R7.4, IBM DB2 for System z applications use specific DFSMS functions to

    communicate directive data placements to Easy Tier (Figure 2-2 on page 9).

    _ Easy Tier Application server

    Easy Tier Application server is the software component in the Easy Tier software stack to

    process the directive data placement requests. Additionally, Easy Tier Application

    generates migration advice (based on the selected method) and tracks the related data

    placement progress

  • Guest
    Reply
    |
    Mar 19, 2015

    Creating a new RFE based on Community RFE #68171 in product z/OS.

  • Guest
    Reply
    |
    Mar 18, 2015

    Attachment (Description)