Administrator Guide

Grouping SAS I/O Ports Using Fault Domains
Front-end ports are categorized into fault domains that identify allowed port movement when a controller reboots or a port fails. Ports
that belong to the same fault domain can fail over to each other because they have connectivity to the same resources.
NOTE: Fault domains cannot be added or modified on SCv2000 or SCv3000 series storage systems. Storage Center
creates and manages fault domains on these systems.
Create a SAS Fault Domain
Create a SAS fault domain to group SAS front-end ports for failover purposes on SC4020 or SC5020 controllers.
Steps
1. If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2. Click the Storage tab.
3. In the Storage tab navigation pane, select Fault Domains, then click Create SAS Fault Domain.
The Create Fault Domain dialog box opens.
4. In the Name field, type a name for the fault domain.
5. In the Ports table, select the SAS ports to add to the fault domain.
When pairing SAS ports into the fault domain:
• Use one port from each controller.
• Make sure the paired ports have the same port number and are connected to the same server.
6. Click OK.
Delete a SAS Fault Domain
Delete a SAS fault domain if it is no longer needed.
Steps
1. If the Storage Manager Client is connected to a Data Collector, select a Storage Center from the Storage view.
2. Click the Storage tab.
3. In the Storage tab navigation pane, expand Fault Domains, then expand SAS and click the fault domain link.
The Fault Domain view is displayed.
4. In the right pane, click Delete.
The Delete Fault Domain dialog box opens.
5. Click OK.
Managing Disks and Disk Folders
Manage disks by adding new disks and organizing disks in disk folders.
Add disks and enclosures to accommodate greater data needs. The supported number of enclosures attached to Storage Center depends
on the controller and enclosure being used.
When adding disks be aware of the following.
• After disks are added, additional space may not be immediately available. Make sure to allow enough time for Storage Manager to
allocate space for writes.
• Create a new disk folder only to address specific application program requirements. Creating a second disk folder may cause storage
to be used inefficiently.
• Data cannot be written to unassigned disks.
• The Assigned disk folder was created during initial configuration of the Storage Center. Managing unassigned disks means moving the
disk to a managed disk folder.
• When Storage Manager detects self-encrypting drives (SEDs) that are Federal Information Processing Standard (FIPS) 140-2
certified, it formats the drives for Secure Data use.
• If Self-Encrypting Drives is licensed, disks will be managed in a Secure Data folder.
Storage Center Maintenance
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