User`s guide

10 – Performing Diagnostics
Preparing for Diagnostic Testing
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10.1.1.2
Installing a Loopback Connector
Before running the loopback test, you must install a loopback connector on the
adapter. Note the following about the loopback connector:
■ The loopback connector must be appropriate for the type of Fibre Channel
adapter connector.
■ Be sure to select the appropriate adapter connector for testing. Each adapter
connector displays in the SANblade Manager main window HBA tree as an
adapter. For example, assume a host is configured as follows:
❑ The first adapter has one connector.
❑ The second adapter has two connectors.
In the HBA tree, these would display as follows:
❑ The first adapter’s connector would be Adapter 0.
❑ The second adapter’s first connector would be Adapter 1.
❑ The second adapter’s second connector would be Adapter 2.
Perform the following steps to install a loopback connector. Installing the connector
stops normal adapter operations.
1. Disconnect the cable from the appropriate adapter connector.
2. Install the loopback connector on the adapter connector.
10.1.2
Preparing for the Read/Write Buffer Test
The read/write buffer test must be run on a device. Before running the read/write
buffer test, from the SANblade Manager main window HBA tree verify that the
adapter is connected to at least one device.
NOTE: Some devices may not support Read/Write Buffer commands. Check with
your hardware vendors or manufacturer.
You can run the read/write test on all devices attached to the adapter or to specific
devices attached to the adapter.
To run the read/write test on all devices attached to an adapter, perform the following
steps from the SANblade Manager main window:
1. Right-click an adapter in the HBA tree.
2. Select Enable Diagnostics on all Devices. A check mark displays next to all
the device icons attached to the selected adapter.