Backplanes
You can view the Backplane object by expanding the controller in the Storage Management tree view. Storage Management displays the status of the backplane and the attached physical disks. The backplane is similar to an enclosure. In a backplane, the controller connector and physical disks are attached to the enclosure. But it does not have the management features (temperature probes, alarms, and so on) associated with external enclosures.
Flexible backplane Zoning
Flexible backplane zoning is a functionality that is introduced in Storage Management. It allows you to connect two PERC hardware controllers to the backplane or internal drive-array by using a single expander. This configuration enables Storage Management to split the backplane between the two PERC hardware controllers, as a result of that increasing the performance of the system. When flexible backplane zoning is enabled, the backplanes display the same backplane ID for all backplanes that are connected to the two PERC hardware controllers. In flexible backplane zoning, physical disks and virtual disks that are connected to the first controller is not displayed on the second controller. Also, physical disks and virtual disks that are connected to the second controller is not displayed on the first controller. For example, when you have to create a virtual disk using the first controller, the following is observed:
- Only the physical disks that are connected to the first controller is enumerated.
- Available for the operation.
The same is applicable when you view the Slot Occupancy Report for a particular controller.
The Flexible backplane zoning feature is only supported on backplanes of 24 slots—PowerEdge R630 and R730xd. When the backplane consists of 26 slots, the additional two slots located next to the rear ports are not considered in this configuration. It is for PowerEdge R730xd.
NOTE: Flexible backplane zoning can be configured only through RACADM and not through Storage Management.
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NOTE: Flexible backplane zoning is supported only on PERC (internal) family of controllers—PERC H730 Adapter, PERC H730 Mini, HBA330, and HBA330 Mini. This feature is not supported on PERC H330 Adapter and PERC H330 Mini.
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NOTE: Minimum of six seconds gap is required for any hot-pluggable devices in or out operations.
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