Deployment Guide

7. On the Attach Volumes page, specify the name, size, and pool for each volume, and click Next.

To add a volume, click Add Row. To remove a volume, click Remove.

NOTE: Dell EMC recommends that you update the name with the hostname to better identify the volumes.

8. On the Summary page, review the host configuration settings, and click Configure Host.

If the host is successfully configured, a Success dialog box is displayed

9. Click Yes to return to the Introduction page of the wizard, or click No to close the wizard.

Enable and configure DM Multipath

NOTE: Be sure to safeguard and blacklist internal server disk drives from multipath configuration files. These steps are

meant as a basic setup to enable DM Multipath to the storage system. It is assumed that DM Multipath packages are

installed.

For RHEL 7 / SLES 12:

1. Run the multipath –t command to list the DM Multipath status.

2. If no configuration currently exists, use the command information displayed in step 1 to copy a default template to the directory /etc.

3. If the DM multipath kernel driver is not loaded:

a. Run the systemctl enable multipathd command to enable the service to run automatically.

b. Run the systemctl start multipathd command to start the service.

4. Run the multipath command to load storage devices in conjunction with the configuration file.

5. Run the multipath –l command to list the Dell EMC PowerVault ME4 Series storage devices as configured under DM Multipath.

Create a file system on ME4 Series volumes

NOTE:

The following steps are to configure a simple XFS file system to mount as a volume from the ME4 Series storage

system.

For RHEL 7 / SLES 12:

1. From the multipath –l command output above, identify the device multipath to target creating a file system. In this example, the first

time multipath is configured, the first device will be /dev/mapper/mpatha, correlating to sg block devices /dev/sdb and /dev/sdd.

NOTE:

Run the lsscsi command to list all SCSI devices from the Controller/Target/Bus/LUN map. This also

identifies block devices per controller.

2. Run the mkfs.xfs/dev/mapper/mpatha command to create an xfs type file system.

3. Run the mkdir/mnt/VolA command to create a new mount point for this file system with a referenced name, such as VolA.

4. Run the mount /dev/mapper/mpatha /mnt/VolA command to mount the file system.

5. Begin using the file system as any other directory to host applications or file services.

6. Repeat steps 1-5 for other provisioned volumes from the PowerVault Manager. For example, to /dev/mapper/mpathb, correlating

to sg block devices/dev/sdc and/dev/sde.

SAS host server configuration for Linux

The following sections describe how to configure SAS host servers running Linux:

• Complete the PowerVault Manager guided system and storage setup process.

• Refer to the cabling diagrams within this guide before attaching a host to the storage system; careful planning will ensure a successful

deployment.

• Administrative or privileged user permissions are required to make system-level changes. These steps assume root level access and

that all required software packages are already installed (for example, DM Multipath).

Attach SAS hosts to the storage system

Perform the following steps to attach SAS hosts to the storage system:

1. Ensure that all HBAs have the latest supported firmware and drivers as described on the Dell Support web site. For a list of supported

SAS HBAs, see the Dell EMC ME4 Series Storage System Support Matrix on the Dell Support web site.

Perform host setup