Skip to main content
NetApp Knowledge Base

Inconsistent file copy performance between volumes when using Zero‑Filled test files

  1. Last updated
  2. Save as PDF
Views:
34
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
perf
Last Updated:

Applies to

  • ONTAP 9
  • Aggregates containing multiple volumes
  • File copy operations from the same client
  • Test files generated using Windows FSUTIL

Issue

  • Two or more volumes located on the same aggregate show significantly different copy times when copying the same file from the same client.
  • The faster copy operation completes in approximately one‑third of the time compared to the slower one.
  • During the copy process:
    • The slower volume shows disk utilization close to 100%.
    • The faster volume shows little to no change in disk utilization.
  • The file used for testing is a virtual file generated by Windows FSUTIL.

 

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.