Sun Microsystems T3 manual Configuring Global Parameters, Cache

Models: T3

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C H A P T E R 2

Configuring Global Parameters

When an array is shipped, the global parameters are set to default values. This chapter describes how to reconfigure your array by changing these default values.

Caution – If you are planning an enterprise configuration using new factory units, be sure to install and set up the units as a partner group before you power on, and change any parameters or create/change any logical volumes. Refer to the Sun StorEdge T3 and T3+ Array Installation, Operation, and Service Manual for more information.

Note – For more information on changing array global parameters, refer to the Sun StorEdge T3 and T3+ Array Administrator’s Guide.

The following parameters are described in this chapter:

“Cache” on page 13

“Logical Volumes” on page 16

“Using RAID Levels to Configure Redundancy” on page 20

Cache

Each Sun StorEdge T3 array controller unit has 256 Mbytes of data cache; each Sun StorEdge T3+ array controller unit has 1 GByte of data cache. Writing to cache improves write performance by staging data in cache, assembling the data into data stripes, and then destaging the data from cache to disk, when appropriate. This method frees the data host for other operations while cache data is being destaged, and it eliminates the read-modify-write delays seen in non-cache systems. Read cache improves performance by determining which data will be requested for the next read operation and prestaging this data into cache. RAID 5 performance is also improved by coalescing writes.

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Sun Microsystems T3 manual Configuring Global Parameters, Cache

T3 specifications

Sun Microsystems T3 is a high-performance scalable server designed to meet the demanding requirements of enterprise-level computing. Introduced as part of the Sun Fire server lineup, the T3 was built to cater to organizations that needed both flexibility and reliability in their IT infrastructure.

One of the key features of the Sun T3 is its SPARC T3 processor, which integrates several cores on a single chip. This processor architecture allows for simultaneous multithreading, maximizing the utilization of resources and enhancing throughput. The SPARC T3 can support up to 16 cores, which means that it can handle a significant number of threads at once, making it an excellent choice for web applications, database processing, and other high-demand environments.

The T3's memory architecture also stands out. The system can support up to 1TB of memory with up to 128 DIMM slots, allowing for large data sets to be processed with ease. This large memory capacity provides ample room for memory-intensive applications and ensures smooth performance even under heavy loads.

Moreover, the Sun T3 is equipped with a unique virtualization technology known as Oracle VM Server for SPARC. This allows businesses to run multiple operating systems and applications on the same physical machine, reducing the need for additional hardware and simplifying management tasks. The virtualization capabilities contribute to cost savings while improving resource utilization.

In addition, the T3 features advanced I/O capabilities with multiple connectivity options, including Ethernet, Fibre Channel, and Serial Attached SCSI (SAS). This flexibility ensures that the system can be integrated into various network environments and supports a wide range of storage solutions.

Furthermore, the T3 is designed for enhanced energy efficiency. Sun Microsystems embedded their CoolThreads technology, which significantly reduces power consumption compared to traditional server architectures. This focus on energy efficiency not only helps in reducing operational costs but also supports corporate sustainability initiatives.

The T3 also incorporates robust security features, including hardware-based security mechanisms that protect data and facilitate secure operations. This is particularly important for businesses that handle sensitive information and are subject to regulatory compliance.

In summary, Sun Microsystems T3 is a formidable server that combines advanced processing power, scalability, virtualization capabilities, and energy efficiency. Its architecture and design make it suitable for a wide array of enterprise applications, positioning it as a reliable foundation for businesses looking to enhance their IT infrastructure.