Managing Physical Disk Channel Status

Use this option to manage the status of  on your .

Important: This option should be used only under the guidance of a Customer and Technical Support representative.

Being able to effectively manage the physical disk channel status on your storage array will ensure that you can diagnose whether problems exist on a particular physical disk channel.

This option allows you to: 

Viewing Physical Disk Channel Details

1

From the , select Advanced >> Troubleshooting >> Physical Disk Channels .
2
 To view details for a specific physical disk channel, highlight a physical disk channel in the Select physical disk channel area and select Show Details.
3
 Select Close to return to the Physical Disk Channels dialog.

Saving Physical Disk Channel Details

1
 In the Select physical disk channel area, highlight a physical disk channel and select Show Details.

2

Select Save As.

3

 In the File name field, enter a name for the file to be saved or browse to a previously saved file if you want to overwrite an existing file.

Use the convention "filename.txt" for the name of the file. (The suffix .txt will be added to the file automatically if you do not specify a suffix for the file.) You might also specify another physical disk and directory if you want to save the file in a location other than the default.
4
 Select Save.

The physical disk channel details are saved to the location you selected.
5
 Select Close to return to the Physical Disk Channels dialog.

Clearing Physical Disk Channel Error Counts

Use Clear Error Counts to clear the cumulative error counts for all physical disk channels on the storage array.

Note: You might want to retain the cumulative error counts to assist with any future problem diagnosis or troubleshooting.

1

Select Clear Error Counts from the Physical Disk Channels dialog.
2
 Click Yes.

The error counts for the selected physical disk channel are reset to 0.

Setting a Physical Disk Channel to Degraded

Use Set Degraded to change the status of a selected physical disk channel from  to . You can manually degrade a channel in order to force all I/O's to use a different channel.

1

In the Select physical disk channel area, highlight an Optimal physical disk channel and select Set Degraded.
2
 Type Yes and click OK.

The selected physical disk channel status is set to Degraded in the Physical Disk Channels dialog.

Setting a Physical Disk Channel to Optimal

Use Set Optimal to change the status of a selected physical disk channel from Degraded to Optimal. When a physical disk channel is Degraded, the  only use the channel for I/O's when no other path is available or when I/O's have failed on all other available paths.

1

In the Select physical disk channel area, highlight a Degraded physical disk channel and select Set Optimal.
2
 Type Yes and click OK.

The selected physical disk channel status is set to Optimal in the Physical Disk Channels dialog.

Locating Expansion Enclosures on a Physical Disk Channel

Use the Blink option to physically locate and identify all expansion enclosures attached to a particular physical disk channel. An indicator light is activated on each expansion enclosure in the storage array.

1

In the Select physical disk channel area, highlight a physical disk channel and select Blink.

The indicator lights on all the expansion enclosures on the selected physical disk channel in the storage array flash.
2
 When you have located the expansion enclosures, click OK.

The lights stop flashing. If any other Blink operations (Blink Storage Array, Blink Disk Group, Blink Expansion Enclosure, Blink Physical Disk) are being invoked from another , these lights also stop flashing

Note: If the lights from the Blink Physical Disk Channel operation do not stop flashing, select Storage Array >> Blink >> Stop All Indications to stop the process manually.

Related Topics

Troubleshooting Options

Locating a Storage Array