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Dell PowerFlex 4.5.x Administration Guide

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Map volumes

Mapping exposes the volume to the specified host, effectively creating a block device on the host. You can map a volume to one or more hosts.

Prerequisites

Volumes can only be mapped to one type of host: either SDC or NVMe. Ensure that you know which type of hosts are being used for each volume, to avoid mixing host types.

About this task

For Linux-based devices, the scini device name may change on reboot. Dell recommends that you mount a mapped volume to the PowerFlex unique ID, which is a persistent device name, rather than to the scini device name.

To identify the unique ID, run the command ls -l /dev/disk/by-id/.

You can also identify the unique ID using VMware. In the VMware management interface, the device is called EMC Fibre Channel Disk, followed by an ID number starting with the prefix eui.

NOTE:You cannot map a volume if the volume is an auto snapshot that is not locked.
NOTE: You cannot map the volume on the target of a peer system if it is connected to a replication consistency group.

Steps

  1. On the menu bar, click Block > Volumes.
  2. In the list of volumes, select one or more volumes, and click Mapping > Map.
  3. A list of the hosts that can be mapped to the selected volumes is displayed. If a volume is already mapped to a host, only hosts of the same type, NVMe or SDC, are listed. If the volume is not mapped to a host, click NVMe or SDC to set the type of hosts to be listed.
  4. In the Map Volume dialog box, select one or more hosts to which you want to map to the volumes.
  5. Click Map.
  6. Verify that the operation has finished and was successful, and click Dismiss.

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