Sun Microsystems T3 manual Dual Hosts With Two Hubs and Four Controller Units

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Dual Hosts With Two Hubs and Four Controller Units

FIGURE 4-8shows two application hosts connected through FC-AL cables to two hubs and four Sun StorEdge T3+ arrays. This configuration, also known as a multi-initiator configuration, can be used for footprint and I/O throughput. The following limitations should be evaluated when proceeding with this configuration:

■Avoid the risk caused by any array or data path single point of failure using host- based mirroring software such as VERITAS Volume Manager or Solaris Volume Manager.

■When configuring more than a single array to share a single FC-AL loop, as with a hub, array target addresses need to be set to unique values.

This configuration is not a recommended for RAS functionality because the controller is a single point of failure.

Note – There are no hub port position dependencies when connecting arrays to a hub. An array can be connected to any available port on the hub.

Each array needs to be assigned a unique target address using the port set command. These target addresses can be any number between 1 and 125. At the factory, the array target addresses are set starting with target address 1 for the bottom array and continuing to the top array. Use the port list command to verify that all arrays have a unique target address. Refer to Appendix A of the Sun StorEdge T3 and T3+ Array Administrator’s Guide for further details.

The following two parameters must be set on the master controller unit, as follows:

■cache mode = auto

■cache mirroring = auto

Note – For information on setting these parameters, refer to the Sun StorEdge T3 and T3+ Array Administrator’s Guide.

38 Sun StorEdge T3 and T3+ Array Configuration Guide • August 2001

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Contents Sun StorEdge T3 and T3+ Array Configuration Guide Please Recycle Contents Configuring Partner Groups Host Connections Glossary Figures Sun StorEdge T3 Array Controller Card and Interconnect Cards Preface Before You Read This Book How This Book Is OrganizedUsing Unix Commands Typographic ConventionsShell Prompts Related DocumentationAccessing Sun Documentation Online Sun Welcomes Your CommentsArray Configuration Overview Product DescriptionController Card 1Sun StorEdge T3 Array Controller Card and Ports Interconnect Cards 2Sun StorEdge T3+ Array Controller Card and PortsInterconnect cards Output Input Array Configurations 4Workgroup Configuration5Enterprise Configuration Configuration Guidelines Restrictions Configuration Recommendations Supported PlatformsSupported Software Sun Cluster SupportArray Configuration Overview Sun StorEdge T3 and T3+ Array Configuration Guide August Configuring Global Parameters CacheConfiguring Cache for Performance and Redundancy Configuring Data Block Size Selecting a Data Block SizeEnabling Mirrored Cache Logical VolumesConfiguring Cache Allocation Guidelines for Configuring Logical Volumes Determining How Many Logical Volumes You NeedDetermining Which RAID Level You Need Creating and Labeling a Logical Volume Setting the LUN Reconstruction RateUsing RAID Levels to Configure Redundancy RAID Configuring RAID Levels Configuring Partner Groups Understanding Partner Groups1Sun StorEdge T3 Array Partner Group How Partner Groups Work Creating Partner Groups Configuration Examples Direct Host ConnectionSingle Host With One Controller Unit 1Single Host Connected to One Controller UnitConfiguration Examples Host Multipathing Management Software LUNFC-AL Sun StorEdge T3 and T3+ Array Configuration Guide August FC-AL HBA LAN Hub Host Connection Application host HBA Sun StorEdge T3 and T3+ Array Configuration Guide August Management host Cache mode = auto Cache mirroring = auto Dual Hosts With Two Hubs and Four Controller UnitsPort Dual Hosts With Two Hubs and Eight Controller Units Controller unit Hub Sun StorEdge T3 and T3+ Array Configuration Guide August HBA Sun StorEdge T3 and T3+ Array Configuration Guide August Hub Application host Switch Host Connection Dual Hosts With Two Switches and Two Controller UnitsSwitch Dual Hosts With Two Switches and Eight Controller Units FC-AL LAN Sun StorEdge T3 and T3+ Array Configuration Guide August Host Connections Sun Enterprise SBus+ and Graphics+ I/O Boards System RequirementsSun StorEdge PCI FC-100 Host Bus Adapter 2Sun StorEdge PCI FC-100 Host Bus AdapterSun StorEdge SBus FC-100 Host Bus Adapter 3Sun StorEdge SBus FC-100 Host Bus AdapterSun StorEdge PCI Single Fibre Channel Network Adapter 4Sun StorEdge PCI Single Fibre Channel Network AdapterSun StorEdge PCI Dual Fibre Channel Network Adapter 5Sun StorEdge PCI Dual Fibre Channel Network AdapterSun StorEdge CompactPCI Dual Fibre Channel Network Adapter 6Sun StorEdge CompactPCI Dual Fibre Channel Network AdapterSun StorEdge T3 and T3+ Array Configuration Guide August Overview of Array Cabling Data PathAdministration Path Connecting Partner GroupsLC-SFF Workgroup Configurations 3Array Workgroup ConfigurationEnterprise Configurations 4Enterprise ConfigurationSun StorEdge T3 and T3+ Array Configuration Guide August Administrative GlossaryCommand-line interface Flash memory device Light-emitting diode Multi-initiator Reverse address resolution protocol Workgroup Sun StorEdge T3 and T3+ Array Configuration Guide August Index HBA RAID Sun StorEdge T3 and T3+ Array Configuration Guide August
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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.
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