To Failback the Virtualization Engine

In the event of a Sun StorEdge T3+ array LUN failover, the virtualization engine will route all I/O through the failover port on the Sun StorEdge T3+ array. After you isolate and check the cause of the failover, the virtualization engine continues to send I/O through the failover path. To restore the I/O to the primary path and fail the LUN back to its original controller, use the following procedure:

1.Verify that the T3+ array active path needs to be restored by viewing a live snapshot of the virtualization engine map, as shown in “Viewing the Virtualization Engine Map” on page 118.

If there has been a failover, the Multipath Drive Summary will show the same Sun StorEdge T3+ array active path WWN for all LUNs associated with one Sun StorEdge T3+ array, as shown in CODE EXAMPLE 9-3.

CODE EXAMPLE 9-3Multipath Drive Summary

Disk pool MP Drive

T3+ Active

Controller Serial

Target

Path WWN

Number

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

t3b00

T49152

50020F230000725B

60020F2000006DFA

t3b01

T49153

50020F230000725B

60020F2000006DFA

2.If the Sun StorEdge T3+ array LUNS have failed over, run the command found in CODE EXAMPLE 9-5for that specific Sun StorEdge T3+ array.

Note The Sun StorEdge T3+ array name is the same as the disk pool name—but with the last digit (equal to the Sun StorEdge T3+ array LUN number) removed, as shown in CODE EXAMPLE 9-4.

For example, the LUNs in disk pools t3b00 and t3b01 are named t3b0 on the Sun StorEdge T3+ array device.

CODE EXAMPLE 9-4Sun StorEdge T3+ array and Disk Pool Name

#/opt/SUWNsecfg/bin/failbackt3path -n t3b0

120Sun StorEdge 3900 and 6900 Series 2.0 Troubleshooting Guide • March 2003

Sun Proprietary/Confidential: Internal Use Only

Page 140
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Sun Microsystems 3900, 6900 manual To Failback the Virtualization Engine, Code Example 9-3Multipath Drive Summary

6900, 3900 specifications

Sun Microsystems was a pioneering force in the computer industry, especially known for its innovative workstations and servers during the late 20th century. Among its notable product lines were the Sun 6900 and 3900 series, which played a critical role in enterprise computing, offering substantial advancements in performance and reliability.

The Sun 6900, also known as the Starfire, was an advanced multiprocessor server introduced in the mid-1990s. One of its standout features was its ability to support up to 64 processors, making it one of the most powerful systems of its time. This scalability was made possible by Sun’s innovative design, which utilized a high-bandwidth crossbar switch architecture that facilitated fast communication between processors, ensuring minimal latency and optimal performance for demanding applications.

The 6900 was built on the UltraSPARC architecture, which provided support for 64-bit processing. This was a significant advancement over 32-bit systems, allowing for improved memory addressing and overall application performance. The server supported large amounts of RAM, up to 512 GB, which was critical for memory-intensive tasks such as database management and scientific computation.

On the other hand, the Sun 3900 series catered to a different segment of the market, targeting businesses requiring robust, yet cost-effective server solutions. The 3900 was designed primarily as a mid-range server and offered impressive reliability features such as hot-swappable components and redundant power supplies. It came equipped with the SPARC architecture, ensuring compatibility with a wide array of software applications.

Both the 6900 and 3900 series made extensive use of Sun’s Solaris operating system, which was known for its stability and security. This operating system allowed for seamless multitasking and efficient resource management, a necessity for enterprise environments where uptime was critical.

In terms of connectivity, both systems supported advanced networking capabilities, including Fast Ethernet and Gigabit Ethernet options, facilitating improved data throughput. Their modular designs allowed for easy upgrades, ensuring that organizations could adapt to changing technological demands without major overhauls.

Overall, the Sun 6900 and 3900 series represented a significant leap forward in server technology, combining powerful processing capabilities, advanced scalability, and reliable performance. These systems played a crucial role in establishing Sun Microsystems as a leader in the enterprise computing arena during their era.