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Status Future consideration
Workspace Storage Protect Family
Categories Spectrum Protect (Server)
Created by Guest
Created on Mar 23, 2021

RELATED IDEAS

Mount retention for sequential file volumes

Currently, mount retention is disable for sequential file device classes. In many cases in real-world use, this can cause a storm of mount/unmount operations if any migration, reclamation, backup, or restore processes rapidly cycle between a handful of file volumes. This can lead to a very delayed activity log (we've observed hours under heavy load) as hundreds of thousands of mount/unmount messages flood the log. This is also a performance limitation as the files are rapidly opened, seeked into, read, and closed - this breaks many assumptions at the filesystem level about prefetching.

Allowing mount retention to be set for sequential file device classes would completely mitigate this issue and likely yield some performance increases as well.

This appears to be a trivial change that would yield a lot of benefit for anyone using sequential file device classes.

Idea priority Low
  • Guest
    Reply
    |     Mar 24, 2021

    This request may not be delivered within the release currently under development, but the theme is aligned with the current multi-year strategy. IBM may consider and evaluate any RFE Community feedback for this request through activities such as voting. IBM will update this request in the future.

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