IBM Z Hardware and Operating Systems Ideas Portal


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Status Not under consideration
Workspace IBM Z and LinuxONE Systems Hardware
Categories I/O and Networking
Created by Guest
Created on Feb 1, 2018

RELATED IDEAS

Greater than 256 LCUs per channel

We are currently using exactly 256 LCUs on some of our channels, which is the limit according to HCD when building IODFs and also according to those at IBM we've spoken to on the subject.

Our ongoing adoption of MzGMM with a Flashcopy has added more copies of data where we address A1 in subchannel set 0, A2 in subchannel set 1, AF1 in subchannel set 2, and only one would ever be active at any point in time, so it would be a huge waste to use different channels for one of those copies of data. The speed at which channels operate is also outpacing the growth of our Storage. We are already at the limit, and we anticipate the possibility of more consolidation in the future.

Idea priority High
  • Guest
    Reply
    |     Aug 4, 2021

    This RFE is being closed due to additional requested information not provided. If this functionality is still required in the future, please open a new RFE. Thank you.

  • Guest
    Reply
    |     Jun 15, 2021

    Hello, Thank you for submitting this request. Just a quick reminder, can you please provide the additional information to help IBM evaluate the request? Alternatively, please let us know if the increase is no longer required so that we can close the request if needed. Per IBM team

  • Guest
    Reply
    |     Jun 15, 2021

    Thank you for submitting this request. Can you please provide the additional information to help IBM evaluate the request?¶
    - How many LCUs per channel are being requested?
    - How many LCUs per Control Unit port are being requested?

  • Guest
    Reply
    |     Jun 14, 2021

    Hello, Thank you for submitting this request. Just a quick reminder, can you please provide the additional information to help IBM evaluate the request? Alternatively, please let us know if the increase is no longer required so that we can close the request if needed.

  • Guest
    Reply
    |     May 14, 2021

    Thank you for submitting this request. Can you please provide the additional information to help IBM evaluate the request?
    - How many LCUs per channel are being requested?
    - How many LCUs per Control Unit port are being requested?

  • Guest
    Reply
    |     Aug 24, 2020

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - z Systems Hardware
    Product - z Systems Hardware
    Component - I/O and Networking

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - z Systems Hardware
    Product - z Systems Hardware
    Component - SAN (FICON/CTC/zHPF/FCP)

  • Guest
    Reply
    |     Feb 28, 2018

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - z Systems Hardware
    Product - z Systems Hardware
    Component - SAN (FICON/CTC/zHPF/FCP)
    Operating system - IBM z/OS
    Source - None

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - z Systems Hardware
    Product - z Systems Hardware
    Component - IOCP
    Operating system - IBM z/OS
    Source - None

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