Dell MD3200, MD3220 owner manual Using DM Multipathing Devices, Prerequisite Steps, 180

Using DM Multipathing Devices

NOTE: Using or modifying any nodes other than the multipathing device nodes can result in array or file system problems, including loss of communication with the array and corruption of the file system. Avoid accessing any device other than the multipathing device.

NOTE: After creating a partition on a multipathing device, all IO operations, including filesystem creation, raw I/O and file system I/O, must be done through the partition node, not the multipathing device nodes.

Prerequisite Steps

The following tasks must be completed before proceeding. For more information about steps 1 and 2, see the MD3200 and MD3220 Storage Arrays Deployment Guide at support.dell.com/manuals. For more information about step 3, see "Creating Virtual Disks" on page 98.

1Install the host software from MD3200 Series resource media—Insert the resource media to start the installation of Modular Disk Storage Manager (MDSM).

NOTE: Red Hat install of 5.x needs a remount of the DVD media to make contents executable.

2Reboot when prompted by the install program—The installation program prompts for and needs a reboot at completion of install.

3Create and map virtual disks using MDSM—After configuring the arrays using the Modular Disk Configuration Utility (MDCU), run the MDSM to create and map virtual disks.

Using the MDSM software:

1Map the host server to the MD3200 Series storage array

2Create the Virtual Disks

3Map newly created arrays to your host server

NOTE: Any array configured with MDCU automatically adds to the list of Devices in the PowerVault Modular Disk Storage Manager Enterprise Management Window (EMW).

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Configuration: Device Mapper Multipath for Linux