IBM System Storage Ideas Portal


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Status Not under consideration
Workspace IBM Spectrum Virtualize / FlashSystem
Created by Guest
Created on Nov 30, 2021

RELATED IDEAS

IBM SVC Port Intelligence

One of the IBM SVC port had errors (numbers loss of frames, buffer credits, link loss event). This caused one of the disk on windows server 2016 to go offline.
THe request is to built an intelligence in SVC product itself to disable the port if there are ton of errors on a given port.

Idea priority Medium
  • Admin
    Philip Clark
    Reply
    |     Jan 12, 2023

    Thank you for submitting this enhancement request. While we would like to implement all the Ideas we receive, for maximum transparency we are closing enhancement requests that don’t currently appear on our two-year roadmap. We may revisit this request in the future, either on FlashSystem or on Storage Insights where we can also provide fabric monitoring.


    • There are two challenges with making this type of change at the storage layer:

      • What to set the thresholds to - there is no "typical" level of unacceptable errors that cause a server to take a disk offline

      • What to do when the threshold is met - automatically disabling a flapping port at the storage level, can cause more issues or user frustration at the fabric level


    • Some alternatives include:

      • change multipathing driver settings

      • implement this type of feature on the switch

      The switch has more insight as it can see error counts for the whole fabric, it is the only entity that understands error counts on inter-switch links, and that is the first place a user will look if there is a SAN problem. Some switches already have have the capability to disable ports that are misbehaving, however these features are often disabled by default.


    See related request for ability to manually offline a port for troubleshooting: SCSI-I-1074

    We appreciate your input and hope that you will continue to submit enhancement requests, as this feedback is a key component to shaping the future direction of Spectrum Virtualize and FlashSystem family.

    Thanks,
    FlashSystem Team

    philipclark@ibm.com

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