Power On an NVMe Storage Drive

Before You Begin

• Linux NVMe hot plug requires the kernel boot argument "pci=pcie_bus_perf" be set in order to get proper MPS (MaxPayloadSize) and MRR (MaxReadRequest). Fatal errors will occur without this argument.

• For a list of the virtual PCIe slots of NVMe drives as seen by the operating system, see NVMe Storage Drive Virtual PCIe Slot Designation. Note that the virtual PCIe slot name is not the same as the name on the server front panel label.

1. To power on the slot for the drive. Type:

   # echo 1 /sys/bus/pci/slots/slot_number/power

   Where slot_number is the PCIe slot number (e.g., 100, which represents the drive labeled NVMe0 on the system front panel).

2. Confirm that the drive has been enabled and is seen by the system.

   Do one of the following:

   • Check the /var/log/messages log file.

   • List available NVMe devices. Type:

     # ls -l /dev/nvme*.

Related Information

• Storage Drive Reference

• Storage Drives Hot-Plug Conditions

• Storage Drive Failure and RAID

• DVD, Storage Drive, and USB Designations