Sun Microsystems T3 manual Guidelines for Configuring Logical Volumes

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Note – Individual physical disk drives are not visible from the application host. Refer to the Sun StorEdge T3 and T3+ Array Administrator’s Guide for more information on creating logical volumes.

Guidelines for Configuring Logical Volumes

Use the following guidelines when configuring logical volumes:

■The array’s native volume management can support a maximum of two volumes per array unit.

■The minimum number of drives is based on the RAID level, as follows:

■RAID 0 and RAID 1 require a minimum of two drives.

■RAID 5 requires a minimum of three drives.

■Drive number 9 can be designated as a hot spare. If designated, drive number 9 will be the hot spare for all volumes in the array.

■A partial drive configuration is not allowed.

■Volumes cannot span array units.

Consider the following questions when configuring logical volumes:

■How many logical volumes do you need (one or two)?

■What RAID level do you require?

■Do you need a hot spare?

Determining How Many Logical Volumes You Need

You can configure a volume into seven partitions (also known as slices) using the format(1M) utility. Alternatively, you can configure virtually a large number of partitions (also known as subdisks) using VERITAS Volume Manager. Therefore, arrays are best configured as one large volume.

Applications benefit from the following logical volume or LUN configurations:

■Two LUNs per array

■OLTP

■ISP

■ERP

■NFS, version 2

■Attribute-intensive NFS, version 3

■One LUN per array

Chapter 2 Configuring Global Parameters 17

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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 Before You Read This Book How This Book Is Organized PrefaceTypographic Conventions Using Unix CommandsRelated Documentation Shell PromptsSun Welcomes Your Comments Accessing Sun Documentation OnlineProduct Description Array Configuration OverviewController Card 1Sun StorEdge T3 Array Controller Card and Ports 2Sun StorEdge T3+ Array Controller Card and Ports Interconnect CardsInterconnect cards Output Input 4Workgroup Configuration Array Configurations5Enterprise Configuration Configuration Guidelines Restrictions Supported Platforms Configuration RecommendationsSun Cluster Support Supported SoftwareArray Configuration Overview Sun StorEdge T3 and T3+ Array Configuration Guide August Cache Configuring Global ParametersConfiguring Cache for Performance and Redundancy Selecting a Data Block Size Configuring Data Block SizeEnabling Mirrored Cache Logical VolumesConfiguring Cache Allocation Determining How Many Logical Volumes You Need Guidelines for Configuring Logical VolumesDetermining Which RAID Level You Need Setting the LUN Reconstruction Rate Creating and Labeling a Logical VolumeUsing RAID Levels to Configure Redundancy RAID Configuring RAID Levels Understanding Partner Groups Configuring Partner Groups1Sun StorEdge T3 Array Partner Group How Partner Groups Work Creating Partner Groups Direct Host Connection Configuration Examples1Single Host Connected to One Controller Unit Single Host With One Controller UnitConfiguration Examples LUN Host Multipathing Management SoftwareFC-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 Dual Hosts With Two Hubs and Four Controller Units Cache mode = auto Cache mirroring = autoPort 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 Dual Hosts With Two Switches and Two Controller Units Switch Host ConnectionSwitch Dual Hosts With Two Switches and Eight Controller Units FC-AL LAN Sun StorEdge T3 and T3+ Array Configuration Guide August Host Connections System Requirements Sun Enterprise SBus+ and Graphics+ I/O Boards2Sun StorEdge PCI FC-100 Host Bus Adapter Sun StorEdge PCI FC-100 Host Bus Adapter3Sun StorEdge SBus FC-100 Host Bus Adapter Sun StorEdge SBus FC-100 Host Bus Adapter4Sun StorEdge PCI Single Fibre Channel Network Adapter Sun StorEdge PCI Single Fibre Channel Network Adapter5Sun StorEdge PCI Dual Fibre Channel Network Adapter Sun StorEdge PCI Dual Fibre Channel Network Adapter6Sun StorEdge CompactPCI Dual Fibre Channel Network Adapter Sun StorEdge CompactPCI Dual Fibre Channel Network AdapterSun StorEdge T3 and T3+ Array Configuration Guide August Data Path Overview of Array CablingConnecting Partner Groups Administration PathLC-SFF 3Array Workgroup Configuration Workgroup Configurations4Enterprise Configuration Enterprise ConfigurationsSun StorEdge T3 and T3+ Array Configuration Guide August Glossary AdministrativeCommand-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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