6.Confirm that the correct disk device firmware version is installed on your hard disks. You can obtain disk firmware updates from the ITRC web site (http://itrc.hp.com). Search for the model number of the disk drive(s) that you want to update. Installation instructions are provided in the firmware download package.

7.Run the Support Tools Manager (STM) diagnostics application (see “Using Support Tools Manager (STM)” (page 61)).

If diagnostics determine that the adapter is defective, you must replace it. Contact your local Hewlett-Packard customer representative or call the Hewlett-Packard Response Center.

Creating Missing Device Files

When the system boots after installation, the insf command automatically creates the proper device files for the “ctl” interfaces, including the A7173A adapter and the SCSI devices attached to it. Under certain conditions, though, the insf command does not create all of the necessary device files. For example, this can occur if you attach additional SCSI disks to an A7173A adapter that is already installed in a system that is up and running.

Example 5-1shows part of a typical ioscan command output, as it could appear when verifying the A7173A installation (see “Verifying the Installation” (page 20)):

Example

5-1 Typical ioscan Listing of SCSI Devices

 

 

disk

10

0/0/1/0/1.0.0

sdisk

CLAIMED

DEVICE

SEAGATE ST39103LC

 

 

 

/dev/dsk/c1t0d0

/dev/rdsk/c1t0d0

disk

11

0/0/1/0/1.2.0

sdisk

CLAIMED

DEVICE

SEAGATE ST39103LC

 

 

 

/dev/dsk/c1t2d0

/dev/rdsk/c1t2d0

disk

45

0/2/1/0/1.8.0

sdisk

CLAIMED

DEVICE

HP 18.2GST318404LC

 

 

 

/dev/dsk/c9t8d0

/dev/rdsk/c9t8d0

disk

46

0/2/1/0/1.10.0

sdisk

CLAIMED

DEVICE

HP 18.2GST318404LC

 

 

 

/dev/dsk/c9t10d0

/dev/rdsk/c9t10d0

In Example 5-1, the second line of each disk entry shows the device file for that disk, in the format /dev/dsk/cxtxdx [...]. If you see a disk or other SCSI device listed without the second line, then its device files are missing.

To correct this problem, use the insf -ecommand to create all of the device files. Then use the ioscan command again to confirm that the device files have been created.

The A7173A Adapter Is Claimed, But There Is No IO

If the A7173A adapter is claimed, but there is no IO, follow these steps to diagnose the problem:

NOTE: Use the iostat command to determine whether there is active IO. See the iostat manpage for more information.

1.Use the ioscan -fnkd mpt command to determine the device file of the controller.

2.Use the mptutil <dev_file> command to display information about the controller.

3.Examine the “Chip Information” section of the mptutil output to determine if the driver state is “operational.”

4.If the driver state is not operational, examine the mptutil command output to determine the A7173A adapter firmware version; then confirm that it is current. To determine the recommended adapter firmware version, see the HP Ultra320 SCSI Host Bus Adapter Support Matrix at:

http://docs.hp.com/en/netcom.html#SCSI%20Host%20Bus%20Adapters

52 Troubleshooting

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HP Ultra320 A7173A manual Creating Missing Device Files, A7173A Adapter Is Claimed, But There Is No IO

Ultra320 A7173A specifications

The HP Ultra320 A7173A is a high-performance Storage Area Network (SAN) component, widely recognized for its reliability and efficiency in data storage solutions. Designed to support the demands of enterprise-level applications, this SCSI (Small Computer System Interface) controller excels in providing fast and reliable data transfer, making it a preferred choice for businesses that require robust storage solutions.

One of the standout features of the A7173A is its ultra-fast data transfer rate. It is capable of achieving speeds of up to 320 MB/s, which is made possible through the Ultra320 SCSI technology. This speed enhancement is crucial for applications requiring quick access to large volumes of data, thus improving overall system performance. The controller maintains compatibility with previous SCSI standards, allowing for interoperability in diverse environments and ensuring that organizations can leverage their existing infrastructure.

The A7173A is built on advanced technologies that enhance its performance and reliability. These include intelligent data buffering and error correction mechanisms, which minimize the likelihood of data loss and improve the integrity of information during transfers. Additionally, the controller features multiple device connections, accommodating up to 15 devices on a single chain. This scalability offers flexibility in expanding storage solutions based on organizational needs.

Another significant characteristic of the HP Ultra320 A7173A is its support for a wide range of operating systems. The controller is versatile, allowing it to integrate seamlessly with numerous enterprise platforms. This broad compatibility ensures that IT departments can deploy the A7173A within their existing environments without major adjustments or additional costs.

Moreover, the A7173A comes with comprehensive management features, enabling administrators to monitor and optimize storage performance effectively. These features help in anticipating issues before they escalate, thereby minimizing downtime and facilitating smoother operations.

In essence, the HP Ultra320 A7173A is a comprehensive SAN solution that offers exceptional speed, reliability, and scalability. Its advanced technologies and versatile compatibility make it an ideal component for organizations looking to optimize their data storage infrastructure while ensuring robust performance across diverse applications. Investing in the A7173A can lead to marked improvements in data management, ultimately contributing to business efficiency and continuity.