Deployment Guide

2. If no configuration exists, use the information that is listed from running the command 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 along 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
Perform the following steps to configure a simple XFS file system to mount as a volume:
For RHEL 7 / SLES 12:
1. From the multipath -l command output, identify the device multipath to target creating a file system. In this example, the first
time that multipath 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.
3. Run the mkdir /mnt/VolA command to create a mount point for this file system with a referenced name, such as VolA.
4. Run themount /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 each provisioned volume in the PowerVault Manager. For example, to /dev/mapper/mpathb, correlating to
sg block devices /dev/sdc and /dev/sde .
iSCSI host server configuration for Linux
The following sections describe how to configure iSCSI host servers running Linux:
Prerequisites
• 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 ensures a successful
deployment.
• Administrative or privileged user permissions are required to make system-level changes. The following sections assume root level
access and that all required software packages are already installed, for example, iSCSI-initiator and DM Multipath.
• Complete a planning worksheet with the iSCSI network IP addresses to be used, per the example in the following table.
Table 7. Example worksheet for single host server with dual port iSCSI NICs
Management IP
Server Management 10.10.96.46
ME4024 Controller A Management 10.10.96.128
ME4024 Controller B Management 10.10.96.129
Subnet 1
Server iSCSI NIC 1 172.1.96.46
ME4024 controller A port 0 172.1.100.128
ME4024 controller B port 0 172.1.200.129
ME4024 controller A port 2 172.1.102.128
ME4024 controller B port 2 172.1.202.129
Subnet Mask 255.255.0.0
Subnet 2
Perform host setup 49