IBM System Storage Ideas Portal


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Status Delivered
Workspace IBM DS8000
Created by Guest
Created on Nov 6, 2020

RELATED IDEAS

Improve DS8000 Host Adapter architecture to provide greater performance over larger fiber distance (RTT 50ms)

It has been found that over a fiber distance of 50ms RTT, the 32G Host Adapter provides a maximum throughput of 500 MB/s if 1 PPRC port is utilized on the HA. The PPRC port was connected to a 32G port on the Director which in turn had a 128G tunnel to the remote site, the remote site was a similar configuration. It was noted that if a second port was utilized on the same HA, there was a slight (10-12%) degradation in performance i.e. with two ports, 430-450 MB/s per port was achieved. This request is to review the architecture of the Host Adapter to enhance its throughput capability over larger distance.

Idea priority High
  • Guest
    Reply
    |     Aug 9, 2023
    Functionality was delivered on R9.2.

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