The BCH command syntax and output are not identical across all HP 9000 systems. To view the scsi command syntax for your system, enter help scsi from the BCH service menu. Example 3-3shows a typical scsi command help screen:

Example 3-3 Typical BCH scsi Command Help Screen

Service Menu: Enter command > help scsi

---- SCSI Help ---------------------------------------------------------------

SCSI displays the SCSI controller parameters. SCSI is also used to set parameters for a SCSI controller at a specified path. These parameters are used by the operating system SCSI driver.

If the value of any parameter is not known or cannot be determined, then a firmware suggested default will be used by the SCSI driver.

An exception is for the termination. If the SCSI card does not support SCSI Parameters, then the "term" setting will be displayed as UNKNOWN. In this case, the termination is not programmatically controlled.

SCSI

SCSI <cell> SCSI <path>

SCSI <path> INIT <id> SCSI <path> RATE <rate> SCSI <path> TERM <term> SCSI <path> WIDTH <width> SCSI <path> DEFAULT SCSI <path> DELete

SCSI DEFAULT

Display all SCSI controller parms in the PD Display all SCSI controller parms on the cell Display SCSI controller parms for the path Set initiator id for specified path

Set transfer rate for specified path Set auto termination for specified path Set bus width for specified path

Set a specific path to use default parms Delete SCSI controller parms for specified path Set all the SCSI devices to use default parms

<cell> is an integer in the range 0..3

 

<path> is in I/O notation, such as 1/0/2/3/4

 

<id> is an integer in the range 0..15

Default: 7

<rate> = SLOW, FAST, ULTRA, ULTRA2, ULTRA160, ULTRA320,

 

or NOLIMIT (where NOLIMIT means use max)

Default: max

<width> is either 0, 8, or 16 (where 0 means use max)

Default: max

<term> is either ON, OFF, or DEFAULT

Default: ON

Short Command for SCSI: SCSI

 

----

 

To confirm the A7173A adapter’s maximum data transfer rate, follow these steps:

1.From the BCH Main Menu, enter ser to display the Service Menu.

TIP: To return to the BCH Main Menu from other BCH menus, enter main.

2.From the service menu, enter the scsi command, using this syntax: scsi <path> rate

Where <path> is the path to the A7173A adapter. Example 3-4shows a typical command output:

Example 3-4 Typical scsi rate Command Output

Service Menu: Enter command > scsi 3/0/6/1/0

rate

 

Path (dec)

Initiator ID

SCSI Rate

Auto Term

Bus Width

-----------------

------------

---------

---------

---------

3/0/6/1/0

6

MAX

UNKNOWN

MAX

In Example 3-4, the SCSI data transfer rate (SCSI Rate) is MAX. This is the default setting, which enables the A7173A adapter’s maximum data transfer rate of 320 MB/s.

To retain the current data transfer rate, enter main to go back to the BCH Main Menu.

Setting and Confirming SCSI Parameters Offline

31

Page 31
Image 31
HP Ultra320 A7173A manual Example 3-3 Typical BCH scsi Command Help Screen, Example 3-4 Typical scsi rate Command Output

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.