Nexsan BEAST Series, User Manual, Page: 134 / 267

3. For Verify schedule , check the Always start verification on check box, then select a day of the week
and a time of day using the drop-down lists.
4. For Verify Priority , check one or both of the check boxes if you want I/O operations to be favored over
RAID array verification by the system. You can select either Favour IO over Surface Scan or Favour
IO over Parity Scrub , or both.
5. For Verify Rate , select the preferred verification rate by clicking its selection button. The default is
Lowest .
Note When there is high host activity, less spare I/O time is available, which can result in longer
verification times. In this situation, it may become necessary to increase the verification rate so that
arrays are verified more quickly.
6. For Verify Critical Schedule , check the Pause verify during critical hours check box to have the unit
pause any verification that is in progress during times when the extra I/O and CPU load would be
undesirable.
7. If Pause verify during critical hours is checked, use the Verify Critical hours drop-down lists and
check boxes to indicate the times and days of the week that are “critical”, so that verification is paused
during these times.
8. Click Save Settings .
A message is displayed, informing you that the settings have been updated. Click the Back button to return to
the Home page.
When a verification utility is running, you can check its progress on the RAID Array Utility Progress page (see
RAID Array Utility Progress on page 66).
Start or Stop RAID Array Verification Immediately
Each array is listed in the Verify Array Specific Settings section. Each row contains the Array name , the
Custom Schedule Settings (which displays Default when no custom settings are set), Start buttons for
surface scan and parity scrub, and a Customize link.
►
To manually start RAID array verification:
1. Find the row for the array you wish to verify.
2. Click the Start button in either the Surface Scan or Parity Scrub column.
A message is displayed, informing you that the verification has begun. Click the Back button to return to the
Verify RAID Array page.
Progress can monitored on the RAID Array Utility Progress page (see RAID Array Utility Progress on
page 66).
►
To manually stop RAID array verification:
1. Find the row for the array that you wish to stop verification for (for instance, if it is negatively impacting
host I/O performance).
2. Click the Stop Verify button.
A message is displayed, informing you that the verification has stopped. Click the Back button to return to the
Verify RAID Array page.
Chapter 3: The Graphical User Interface — Configure RAID
Nexsan High-Density Storage
User Guide
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