Chapter 4: Basic Operation
Best Practices for Optimal Performance
QX and QXS Setup Guide
126
Feature
Impact
Recommendations for
minimizing impact
Background and
manual scrubs
l
A background scrub affects performance up to 5%.
l
A manual scrub affects performance
25 - 60%.
l
Disable background
scrubs through the
Disk Storage
Management Utility or
the CLI.
Caution:
If you
disable background
scrubs, run a manual
scrub at least once
per month.
l
Run a manual scrub
during non-peak
hours.
l
Set the Utility priority
for manual scrubs to
low through the Disk
Storage Management
Utility or the CLI.
Reconstruction
and copyback
l
Reconstruction affects performance
5 - 50%.
l
Copyback affects performance up to 15%.
l
Set the Utility priority
for reconstruction to
low through the Disk
Storage Management
Utility or the CLI.
l
Replace failed drives
during non-peak hours
Caution:
It is
recommended that
you replace failed
drives immediately.