Quantum LTO-2 manual Word About Scsi Controllers, Configuring for the DEC/Compaq Unix Environment

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Chapter 6 UNIX Settings

A Word About SCSI Controllers

A Word About SCSI Controllers

The LTO-2 Half-Height Tape Drive transfers data at 40Mbytes per second, with 2:1 compression of the data. The drive supports the SCSI Ultra3 specification and can transfer data at burst rates of up to 160 Mbytes per second. To achieve maximum drive performance, it is important to choose high-performance disk drives for your system, as well as high performance SCSI controllers. Table 11 lists the types of SCSI controllers that Quantum recommends, in order of least preferred to most preferred (top to bottom).

Table 11 SCSI		Controller Type	Maximum Transfer Rate
Controllers		Controller Type	Maximum Transfer Rate
Controllers

		Wide Ultra2 SCSI	80 Mbytes per second, compatible

		Ultra 3 SCSI	160 Mbytes per second, minimum preferred

		Ultra 320 SCSI	320 Mbytes per second

For definitions of the terms used above, please refer to SCSI Trade

Association web site: www.scsita.org/aboutscsi/index01.html

Configuring for the DEC/Compaq UNIX Environment

Finding Existing	SCSI ID #7 is almost always dedicated to the SCSI controller. Never
SCSI Controllers	configure your target device for ID 7 unless you are absolutely sure that
and Devices	the controller is not addressed for ID 7.

50	LTO-2 Half-Height Tape Drive User’s Guide

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Contents 72 Copyright Statement Contents Chapter Operation Injected Noise Reliability Safety Compliance EMC ComplianceMean Time to Replace Chapter Troubleshooting Guide Figures Figures Viii Tables Tables Preface Audience Purpose Document OrganizationConventions NotationalTech Tip SCSI-2 Specification RelatedDocuments ContactsCustomer Support Send faxes for the Customer Support Department toSend e-mail for the Customer Support Department to Visit our web site1Introduction Features 2Installation and Quick Start Internal LTO-2 Half-Height Tape Quick Start GuideDrive Quick Start Desktop LTO-2 Unpacking and Inspection Internal Tape Drive Guidelines and CautionsDrive Installation Instructions Installing an Internal LTO-2 Half-Height Tape DriveJumper Pins Scsi IDScsi ID=8 Terminator Power Open Shunted DefaultJumpers Horizontally or vertically see figure MountingWithin 5 degrees of horizontal Internal LTO Half-Height Tape Drive Mounting Dimensions Rear View Internal LTO-2 Half-Height Tape Drive Connecting a Checking the Scsi TerminationSerial Cable for Tape LibrariesConnecting a Power Installing the LTO DriverPin Numbers Description CableInstalling a Desktop LTO-2 Half-Height Tape Drive Cord Desktop LTO-2 Half-Height Tape DriveLTO-2 Half-Height Tape Drive User’s Guide 3Operation Understanding the Front Panel Display Generic Front Panel DisplayBlink Codes EOTUsing LTO Cartridges Loading a Cartridge Unloading a CartridgeWrite-protecting a CartridgeMaintenance Cartridge CareDrive Maintenance Retensioning the TapeOperation Drive Maintenance Operation Drive Maintenance 4Theory Track LayoutShows the layout of data on an LTO tape Data Buffer Recording MethodData Integrity C1 ECC Faults Data CompressionServo-tracking Tracking is re-establishedData Compression Considerations Intelligent Data CompressionPage 5Specifications Physical Specifications Internal Scsi Drive Specification Without Bezel With BezelInternal LTO-2 Half-Height Tape Drive Dimensions Specification +12 VDC + 5VDC Power SpecificationsIdle Power Watts RMS Standby Power Typical Operating Power Drive Performance Specifications Specification LTO-2Specification Value Specification Operational Non-operational Environmental RequirementsInjected Noise ReliabilityAt any frequency between 45 Hz and 20 MHz Specification Description Mean Time Between FailuresLTO Cartridge Specifications Mean Time toReplace Environmental ConsiderationsCartridge Memory Regulatory ComplianceReliability Country Regulatory Organization Compliant to EMC Compliance Country Regulatory Organization Compliant to Disposal of Electrical and Electronic Equipment 6UNIX Settings Configuring for the DEC/Compaq Unix Environment Word About Scsi ControllersSave the file. Then run the following command ParametersFinding Current TargetsTypes ControllersDevice File ConfiguringSt.conf Smit Enter Smit at the Tape Drive menu by typing smit tape Set the Block size toConfiguring for SCO Open Server Using the commandThis command produces output similar to Current tape drives can be found using the commandConfiguring the LTO-2 Half-Height Tape Drive with mkdev Configuring for Linux Finding Existing Scsi Controllers DevicesYou may see output similar to To find existing Scsi devices execute the commandYou should see output similar to Scsi controllers and devices use the command Configuring for SGI IrixOutput of the command will be similar to the following Configuration Configuring for HP-UXHardware/Driver Unix Settings Configuring for HP-UX 7Troubleshooting Guide Installation Best PracticesClicking on Computer Management Device Manager Troubleshooting Suggestions Troubleshooting Guide Troubleshooting Suggestions Windows Operating System Red Hat LinuxProblems with Tape Drive and Cartridge Tape will not Load into Tape DriveTape will not Eject from the Drive LTO-2 Half-Height Tape Drive User’s Guide Emergency Reset and Emergency Cartridge Eject Problems During Backup/Restore OperationsPreviously Written Data on the Tape will be Destroyed Tape is Write Protected Miscellaneous TapeAlert Messages If either of the following messages appearsLTO-2 Half-Height Tape Drive User’s Guide Slow Backups LTO-2 Half-Height Tape Drive User’s Guide Index Index Scsi ID Tape drive