IBM System Storage Ideas Portal


This portal is to open public enhancement requests against IBM System Storage products. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


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Welcome to the IBM Ideas Portal (https://www.ibm.com/ideas) - Use this site to find out additional information and details about the IBM Ideas process and statuses.

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Status Not under consideration
Workspace IBM Spectrum Virtualize / FlashSystem
Created by Guest
Created on Sep 13, 2020

RELATED IDEAS

StorM performance evalution problem

StorM evaluates performance better than the actual machine.
StorM evaluates at 300,000 IOPS or more/1 msec or less under the following conditions. The bottleneck is CPU Utilization.
FS7200, 4.8TB FCM x 13, DRAID6, Read:Write=99%:1%, Block size=6KiB, iSCSI, DRP, dedupe rate=75%, compression rate=61%
I tested with FS9110 in Japan lab, but actual is 120,000 IOPS when latency is 1 msec or less.
The reason for this difference is as follows.
iSCSI processing is fixedly assigned to a specific core. When the load is increased, this core becomes the performance bottleneck.
However StorM balances CPU Utilization among the core for iSCSI and the others.This cause overestimation comparing actual machine.
StorM should be modified based on the behavior of the actual machine if a specific core becomes a bottleneck.

Idea priority Urgent

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