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IBM Z Hardware and Operating Systems Ideas Portal


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Status Delivered
Workspace z/VM
Created by Guest
Created on Jul 15, 2022

More than 2TB memory limit for z/VM

Customer's Oracle DB 19c is growing rapidly as the end-users increase from 14k to 20k. In the coming year, they expect to reach 60k users.

More memory is required to eliminate performance and log-in issues. The current z/VM 7.2 LPAR only has 2TB real memory limit while the guest has 1TB limit. Current z/VM guest with Oracle DB PROD will be allocated with 800+GB for 30k users. We expect more than 1TB is needed for the z/VM guest to accommodate final target of 60k users.

Idea priority High
  • Admin
    Kerry Wilson
    Reply
    |
    Feb 11, 2024

    z/VM Greater than 1TB Guest Support is now supported. See this link for more details:

    https://www.vm.ibm.com/memman/gt1guest.html