Administrator Guide

Table Of Contents
Steps
1. Click the HOME menu.
The Unisphere Central Home page is displayed.
If a Storage Center is selected from the drop-down list in Unisphere Central, click
(Home).
2. From the
Data Mobility menu, click Replications & Live Volumes.
3. Click the Live Volumes tab.
The Live Volumes view is displayed. If a Live Volume is not optimized, a banner message is displayed. The message states
that Live Volumes are available that are eligible for ALUA optimization.
4. Click Update to ALUA Optimized.
The Update to ALUA Optimized dialog box opens.
5. Select the Live Volumes that you want to optimize.
6. Select whether to reset the secondary server mappings.
If you select the Reset Secondary Server Mappings check box, the server mappings of the Secondary Live Volumes
are reset and which causes an immediate outage. A manual rescan must be performed.
By default, the Reset Secondary Server Mappings check box is cleared and will not cause an outage. The secondary
side servers must be restarted later during a maintenance operation.
7. Select whether to report non-optimized paths.
By default, the Report Non-optimized Paths check box is selected, and Live Volumes report non-optimized ALUA
paths from the secondary system.
If you clear the Reset Secondary Server Mappings check box, Live Volumes does not report non-optimized ALUA
paths from the secondary system.
NOTE:
Using non-optimized paths is not recommended in Microsoft Windows environments and reporting non-
optimized path reporting should be disabled. When all paths are reported as non-optimized, MPIO drivers do not
function in a round-robin as expected. Data transfer is reduced to a single path causing a delayed failover.
NOTE: Certain Windows Server 2016 versions can support non-optimized path reporting properly. For more information
and best practice guidelines for configuring MPIO on Microsoft Server 2016, see the Dell EMC SC Series Storage and
Microsoft Multipath I/O white paper on the Dell support site.
8. Click OK.
Enable or Disable Non-Optimized Path Reporting
When Live Volume ALUA is enabled, non-optimized paths are reported by default. However, this setting can be enabled or
disabled to optimize path I/O.
Steps
1.
Click the
HOME menu.
The Unisphere Central Home page is displayed.
If a Storage Center is selected from the drop-down list in Unisphere Central, click (Home).
2. From the
Data Mobility menu, click Replications & Live Volumes.
3. Click the Live Volumes tab.
4. Select the Live Volume to edit and click (Edit).
The Edit Live Volume dialog box opens.
5. In the Live Volume Attributes area, select or clear the non-optimized path setting.
Select the Report Non-optimized Paths checkbox to enable Live Volumes to report non-optimized ALUA paths from
the secondary system.
Clear the Report Non-optimized Paths checkbox to disable Live Volumes from reporting non-optimized ALUA paths
from the secondary system.
6. Click OK.
Storage Center Replications and Live Volumes
245