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Windows multipath i/o support, Multipath support – Dell Emulex Family of Adapters User Manual

Page 665

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Emulex Drivers for Windows User Manual

P010077-01A Rev. A

3. Configuration

iSCSI Driver Configuration

665

The Microsoft iSCSI Initiator Service sets its own initiator name. Once you have

installed it, you must replace this with your chosen initiator name. To do this:
1. In the Microsoft iSCSI Initiator Service, under the general tab, click Change.
2. Type your initiator name and click OK.

Logging into a Target Using the Microsoft Software Initiator

If you install the Software Initiator, you must select the UCNA initiator when logging

into the target. To do this:
1. From the Targets tab, select the target and click LogOn.
2. Click Advanced. Under the General Tab, everything appears as default.
3. Select the UCNA initiator as the local adapter, select your source IP, and click OK

Windows Multipath I/O Support

This section describes the installation and login processes for multipath I/O support on

Windows Server operating systems.

Multipath Support

MPIO must be installed from the Server Manager. After installing the MPIO feature,

you must launch and configure the MPIO GUI to enable multipath support for iSCSI

devices.
The following steps describe the installation process for setting up Microsoft iSCSI

DSM and enabling multipath I/O for all iSCSI devices irrespective of their vendor and

device IDs. You can use the MPIO GUI to configure DSMs other than Microsoft iSCSI

DSM. Also, you can use the GUI to enable multipath support for a specific vendor ID

and device ID. For details on these topics, refer to the Microsoft TechNet Library on the

Microsoft website.
In a multipath configuration the driver parameters, LDTO and ETO, can be configured

to control the amount of time it takes for the failover operation to complete. The default

value of LDTO is 20 seconds and the default value of ETO is 90 seconds.
For information on modifying the timeout parameters in a failover configuration, refer

to “Error Handling Under MultiPath (MPIO) and Cluster Configurations” on page 668.
If the ETO or LDTO value needs to be modified,
1. Select the Emulex OneConnect iSCSI CNA in the Windows Device Manager under

Storage Controllers.

2. Right click and select Properties. The Device Manager Property page opens.
3. Select the Advanced tab and set the desired value of ETO and LDTO, for example

ETO=120 and LDTO=60.

4. Reboot the system for the changes to take effect.
5. Log into the iSCSI target using WMI. For more information, see “Logging into

Targets for Multipath Support” on page 666.