Deployment Guide

2. Use the SAS cabling diagrams to cable the host servers directly to the storage system.
3. Identify SAS HBA initiators to connect to the storage system by doing the following:
a. Open a terminal session.
b. Run the dmesg|grep scsi|grep slot command.
c. Record the WWN numeric name.
Register the host and create and map volumes
1. Log in to the PowerVault Manager.
2. Access the Host Setup wizard by doing one of the following:
• From the Welcome screen, click Host Setup.
• From the Home topic, click Action > Host Setup.
3. Confirm that you have met the listed prerequisites, then click Next.
4. Enter a hostname.
5. Using the information from step 3 of Attach SAS hosts to the storage system to identify the correct initiators, select the SAS initiators
for the host you are configuring, then click Next.
6. Group hosts together with other hosts.
a. For cluster configurations, use the Host groups setting to group hosts in a cluster.
• If this host is the first host in the cluster, select create a new host group, then provide a name and click Next.
• If this host is being added to a host group that exists, select Add to existing host group. Select the group from the drop-
down list, then click Next.
b. For stand-alone hosts, select the Do not group this host option, then click Next.
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 Multipathing
NOTE:
Safeguard and blacklist internal server disk drives from multipathing configuration files. These steps are meant
as a basic setup to enable DM Multipathing to the storage system. It is assumed that DM Multipathing packages are
installed.
For RHEL 7 / SLES 12:
1. Run the multipath –t command to list the DM Multipathing status.
2. If no configuration exists, use the command information that is listed in step 1 to copy a default template to the directory /etc.
3. If the DM multipathing 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 along with the configuration file.
5. Run the multipath –l command to list the ME4 Series storage devices as configured under DM Multipathing.
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 theME4 Series Storage
system.
For RHEL 7 / SLES 12:
1. From the multipath –l command output, identify the device multipathing to target creating a file system. In this example, the first
time that multipathing is configured, the first device is /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 command
also identifies block devices per controller.
2. Run the mkfs.xfs/dev/mapper/mpatha command to create an xfs type file system.
Perform host setup
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