Users Guide

Connectors
A controller contains one or more connectors (channels or ports) to which you can attach disks. You can externally access a connector by
attaching an enclosure (for external disks) to the system or internally access by attaching to the backplane (for internal disks) of a system.
You can view the connectors on the controller by expanding the controller object in the tree view.
Topics:
• Channel Redundancy
• Creating A Channel-Redundant Virtual Disk
• Connector Health
• Connector Properties And Tasks
• Logical Connector Properties And Tasks
Channel Redundancy
You can create a virtual disk that uses physical disks that are attached to dierent controller channels. The physical disks may reside in an
external enclosure or the backplane (internal enclosure). If the virtual disks maintain redundant data on dierent channels, then these
virtual disks are channel redundant. Channel redundancy is when one of the channels fail, the data is not lost as redundant data resides on
another channel.
Channel redundancy is implemented by selecting physical disks on dierent channels when using the Create Virtual Disk Advanced
Wizard.
NOTE
: Channel redundancy only applies to controllers that have more than one channel and that attach to an external disk
enclosure.
Creating A Channel-Redundant Virtual Disk
NOTE
: Channel redundancy only applies to controllers that have more than one channel and that attach to an external disk
enclosure.
The following instructions provide information on creating a virtual disk that uses channel redundancy.
1 Launch the Create Virtual Disk Advanced Wizard:
a In the Server Administrator window, under the system tree, click Storage dashboard.
b Locate the controller on which you are creating a channel-redundant virtual disk and expand the controller object until the
Virtual Disks object is displayed.
c Select Virtual Disks and click Go To The Create Virtual Disk Wizard.
d Click Virtual Disk Advanced Wizard.
2 Follow the steps in Create Virtual Disk Advanced Wizard.
3 Click Exit Wizard to cancel the virtual disk creation. In this step, you select the channels and the disks to be used by the virtual disk.
The selections you make determine whether the virtual disk is channel-redundant.
There are specic RAID level and conguration requirements for implementing channel redundancy. You must select the same number
of physical disks on each channel that you use. For information on the number of physical disks that can be used for dierent RAID
levels, see Number Of Physical Disks Per Virtual Disk. For information on controller-specic implementations of the RAID levels, see
Controller - Supported RAID Levels.
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