Multipathing Options in the Sun

StorEdge 6900 Series

The presence of the virtualization engine makes multipathing in a Sun StorEdge 6900 series environment challenging.

Unlike Sun StorEdge T3+ array and Sun StorEdge network FC switch-8 and switch- 16 switch installations (which present primary and secondary pathing options), the virtualization engines present only primary pathing options to the data host. The virtualization engines handle all failover and failback operations and mask those operations from the multipathing software on the data host.

The following example illustrates a Sun StorEdge Traffic Manager (MPxIO) software problem on a Sun StorEdge 6900 series system.

#/usr/sbin/luxadm display

/dev/rdsk/c6t29000060220041F96257354230303052d0s2 DEVICE PROPERTIES for disk: /dev/rdsk/ c6t29000060220041F96257354230303052d0s2

Status(Port

A):

O.K.

Status(Port

B):

O.K.

Vendor:

 

SUN

Product ID:

 

SESS01

WWN(Node):

 

2a000060220041f4

WWN(Port A):

2b000060220041f4

WWN(Port B):

2b000060220041f9

Revision:

 

080C

Serial Num:

 

Unsupported

Unformatted

capacity:

102400.000 MBytes

Write Cache:

Enabled

Read Cache:

 

Enabled

Minimum prefetch:

0x0

Maximum prefetch:

0x0

Device Type:

Disk device

Path(s):

 

 

/dev/rdsk/c6t29000060220041F96257354230303052d0s2 /devices/scsi_vhci/ssd@g29000060220041f96257354230303052:c,raw

Controller

/devices/pci@6,4000/SUNW,qlc@2/fp@0,0

Device Address

2b000060220041f4,0

Class

primary

State

ONLINE

Controller

/devices/pci@6,4000/SUNW,qlc@3/fp@0,0

Device Address

2b000060220041f9,0

Class

primary

State

ONLINE

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

Sun Proprietary/Confidential: Internal Use Only

Page 36
Image 36
Sun Microsystems 3900 manual Multipathing Options in the Sun StorEdge 6900 Series, # /usr/sbin/luxadm display

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.