Q-Logic 4000 SERIES manual System Registry Parameters, MaximumSGList

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3 – Windows 2000 Driver Installation System Registry Parameters

NOTE: You do not have to use the Device Manager or the Hardware Wizard to uninstall the QLA40xx HBA. After you have removed the QLA40xx HBA and restarted your computer, Windows 2000 recognizes that it has been removed.

3.6

System Registry Parameters

The following system registry parameters are available with the QLA40xx HBA:

MaximumSGList

NumberofRequests

3.6.1

MaximumSGList

Windows 2000 includes enhanced scatter/gather list support for doing large SCSI I/O transfers. Windows 2000 supports up to 256 scatter/gather segments of 4096 bytes each, allowing transfers up to 1,048,576 bytes.

NOTE: The OEMSETUP.INF file automatically updates the registry to support 33 scatter/gather segments. This setting provides the best overall performance.

To change this value, follow these steps:

1.Click Start, click Run, and open the REGEDT32 program.

2.Select HKEY_LOCAL_MACHINE and follow the tree structure to the QLogic driver:

HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services

Ql4000 Parameters Device

3.Double-clickMaximumSGList:REG_DWORD:0x41.

4.Enter a value from 16 to 255 (10h to FFh). A value of 255 (FFh) enables the maximum 1-MB transfer size. Any value above 255 enables 64K transfers. The default value is 33 (21h).

5.Click OK.

6.Exit the REGEDT32 program, then restart the system.

IS0053301-00 D

3-5

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Contents SANblade 4000 Series User’s Guide Page Table of Contents Section Red Hat Linux Driver Installation Figures Tables General Description How to Use this GuideIntroduction Features Hardware Hardware IS0053301-00 D QLA40xx HBA Components QLA4000/4000CQLA4000C HBA Layout LEDsInstallation in the Computer QLA40xx HBA Operating Environment SpecificationsEMI and EMC Requirements LabelAgency Certification Product Safety Requirements Software II Software II-2 IS0053301-00 D Creating the Driver Disk Optional Windows 2000 Driver Installation QL4000.SYSSupported Features Driver FilesInstalling the Driver Select specify a location. Click Next Start Device Driver Installation dialog box, click NextAdding the QLA40xx HBA to the Existing OS Removing the Driver Updating the Existing DriverDouble-clickMaximumSGListREGDWORD0x41 System Registry ParametersMaximumSGList NumberofRequests Windows NT Driver Installation QL4000.SYS Select the QLogic QLA4000 PCI iSCSI Adapter and press Enter Adding the QL4000.SYS Driver to the Existing OSSelect QLogic QLA4000 PCI iSCSI Adapter, then click OK Double-clickMaximumSGListREGDWORD0x21 Additional Notes LargeLunsPage Creating the Driver Disk Red Hat Linux Driver InstallationIntroduction Building a Custom Kernel to Load the Driver Automatically Edit Makefile under the kernel scsi directory. For example For Red Hat Linux 8.0, locate the following lines Building a Driver from the Source Code Building a Uniprocessor UP Version of the Driver Enter Building a Ramdisk Image to Load the Driver Automatically Loading the Driver ManuallyFor example System Driver Parameter maxscsilunsProc Filesystem Support LimitationsPre-installation Requirements Solaris Driver Installation QLA4000You are prompted to select a driver package. For example Target and LUN Support for Disk Devices Installing QLogic QLA4000 driver as QLA4000-0Target and LUN Support Tape Devices You are prompted to remove the driver Uninstalling the Solaris Sparc DriverPage SANblade Control III-2 Windows NT and Windows Installation ProcedureInstallation Introduction Dialog Box Choose Shortcut Folder Dialog Box Red Hat Linux and Solaris Sparc Install Complete Dialog BoxGetting Started Uninstalling SANblade ControlWindows NT/Windows Red Hat Linux or Solaris SparcHost Information Tabbed Page Main Window Main Window and Window NavigationHelp FileView Target Information Tabbed LUN List Tabbed Host Information Tabbed Host TabbedFirmware Network HBA Tabbed Pages11. HBA Options Tabbed Page Network 12. Target Settings Tabbed Target Settings Tabbed13. Target Information Tabbed Target Information TabbedFrom the Select Options list, click Network see figure Configuring the QLA40xx HBAHBA Information Tabbed 15. HBA Tabbed Page Network Select Options box, select Firmware Changing the Firmware Configuration Parameters18. Save Firmware Parameters Message IS0053301-00 D Configuring Specific Targets Configuring TargetsConfiguring Using Discovery Click the Target Settings tab Changing the Target Configuration ParametersClick the Select File to Download button Firmware Upgrade20. Update Firmware Dialog Boxes SANblade Control iX Firmware Upgrade IS0053301-00 D SANblade Control iX Firmware Upgrade IS0053301-00 D

4000 SERIES specifications

The Q-Logic 4000 Series represents a significant advancement in storage networking solutions, particularly designed to meet the high demands of modern data centers. As businesses continue to accumulate vast amounts of data, the need for efficient, high-performance storage solutions becomes more pronounced. This series shines in delivering flexibility, scalability, and high availability.

One of the standout features of the Q-Logic 4000 Series is its support for advanced protocols such as Fibre Channel and Ethernet. This versatile capability enables seamless integration within diverse environments, whether organizations are operating on traditional storage area networks (SANs) or transitioning to more cost-effective, high-speed Ethernet-based storage solutions. The flexibility in protocol support allows businesses to tailor their infrastructure to their specific needs without being tied to a single technology.

The Q-Logic 4000 Series also boasts a robust performance, featuring high IOPS (Input/Output Operations Per Second) capabilities that cater to I/O-intensive applications and large-scale virtualized environments. This efficiency is crucial for workloads such as database management, big data analytics, and mission-critical applications. Additionally, the series employs advanced technologies such as hardware offload and flow control mechanisms, resulting in reduced CPU usage and improved overall system performance.

High availability is another critical characteristic of the Q-Logic 4000 Series. The products are engineered with redundancy and failover mechanisms that ensure continuous operation, thereby reducing downtime and bolstering business continuity. Built-in features such as link aggregation and adaptive load balancing further enhance reliability and performance, allowing organizations to maintain optimal operations even amidst traffic fluctuations.

Scalability is a central theme in the design of the Q-Logic 4000 Series. The architecture supports linear scaling, enabling users to grow their networking capabilities in alignment with their expanding data needs. This characteristic is particularly beneficial for companies anticipating growth, as it allows them to invest in the system incrementally.

Security features within the Q-Logic 4000 Series also receive significant attention. The implementation of encryption technologies and secure access protocols ensures that sensitive data remains protected from unauthorized access and cyber threats.

In summary, the Q-Logic 4000 Series positions itself as a cutting-edge solution in the storage networking landscape, combining advanced technologies, high performance, and robust security features. Whether for a growing enterprise or an established data center, these products deliver a compelling solution for modern storage challenges.