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Integrated Dell Remote Access Controller 9 Version 3.21.21.21 User's Guide

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Viewing universal slots

Some 14th generation PowerEdge server backplanes supports both SAS/SATA and PCIe SSD drives in the same slot. These slots are called universal slots and are wired to the primary storage controller (PERC) and a PCIe extender card. The backplane firmware provides information about the slots that support this feature. The backplane supports SAS/SATA disks or PCIe SSDs. Typically, the four higher number slots are universal. For example, in a universal backplane that supports 24 slots, slots 0-19 support only SAS/SATA disks while slots 20-23 support either SAS/SATA or PCIe SSD.

The roll-up health status for the enclosure provides the combined health status for all the drives in the enclosure. The enclosure link on the Topology page displays the entire enclosure information irrespective of which controller it is associated with. Because two storage controllers (PERC and PCIe extender) can be connected to the same backplane, only the backplane associated with the PERC controller is displayed in System Inventory page.

In the Storage > Enclosures > Properties page, the Physical Disks Overview section displays the following:
  • Slot Empty — If a slot is empty.
  • PCIe Capable — If there are no PCIe capable slots, this column is not displayed.
  • Bus Protocol — If it is a universal backplane with PCIe SSD installed in one of the slots, this column displays PCIe.
  • Hotspare — This column is not applicable for PCIe SSD.
NOTE: Hot swapping is supported for universal slots. If you want to remove a PCIe SSD drive and swap it with a SAS/SATA drive, ensure that you first complete the PrepareToRemove task for the PCIe SSD drive. If you do not perform this task, the host operating system may have issues such as a blue screen, kernel panic, and so on.

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