LaCie KY0730482 Category, Scsi types, Transfer rate, # of devices, Cable length, Connectors

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LaCie d2 SCSI Hard Drive

Technical Information

 

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Warning! Your LaCie drive is not compatible with HVD devices or buses! Never connect your LaCie drive to an HVD bus or peripheral. Doing so may damage your drive and/or system, and will void your warranty.

LVD (Low Voltage Differential) – This latest addition to the SCSI interface, which became important with Ultra2 SCSI, combines all of the advantages of SE and HVD. LVD has rapidly become the de facto standard in high-performance SCSI. Its benefits include increasingly lower cost, more and more widespread use, enhanced reliability, higher data transfer rates, compatibility with the newest high-speed hard drives, longer cable lengths than SE (up to 12 m), and backwards compatibility with older SCSI technologies.

The following table shows the different types of SCSI implementations:

Category

Narrow (8 bit)

Wide (16 bit)

Wide (16 bit)

Wide (16 bit)

Wide (16 bit)

 

 

 

 

 

 

SCSI types

Fast SCSI

Ultra Wide SE

Ultra2 Wide (LVD)

Ultra 160 (LVD)

Ultra 320 (LVD)

 

 

 

 

 

 

Transfer rate

10MB/s max

40MB/s max

80MB/s max

160MB/s max

320MB/s max

 

 

 

 

 

 

# of devices

8 max

16 max

16 max

16 max

16 max

 

 

 

 

 

 

Cable length

3 m max

1.5 m max

12 m max

12 m max

12 m max

 

 

 

 

 

 

Connectors

25 or 50-pin

68-pin

68-pin

68-pin

68-pin

 

 

 

 

 

 

Fundamental SCSI rules

Follow these seven basic rules when setting up your SCSI peripheral or chain.

1)Give each SCSI peripheral a unique ID number.

Each device in your SCSI chain needs a unique ID number, either from 0 to 6 for Narrow SCSI, or any number between

0-6 and 8-15 for Wide SCSI (ID 7 is generally reserved for your computer’s SCSI controller). No two devices in the same chain may have the same ID number, but the order in which the devices are connected in the bus does not matter. For example, the device with ID 2 could be physically located at the end of the chain, while the device with ID 6 is connected directly to the SCSI port of your computer.

2)Always terminate your SCSI chain.

The last device in your SCSI chain must be terminated. Even if you have only one SCSI peripheral in your chain, you must terminate it. Single-ended SCSI devices may have an internal terminator (using an on/off switch) or may require an external terminator.

Warning! LVD devices always require external termination. Consult your computer supplies specialist for a terminator that meets your needs.

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Contents Contents Printing How to Use This ManualToolbar To ExitChanges CopyrightsTrademarks Canada Compliance StatementIntroduction PrecautionsWarranty Icons Used in This ManualMac Users Using Mac OS 8.6 What is SCSI?Manual Updates LaCie Storage Utilities SoftwarePC Users Using Windows 2000 and Windows XP PC Users Using Windows 98 Second Edition SE and Windows MeLaCie Scsi Hard Drive Views Getting To Know Your LaCie Hard DriveMinimum System Requirements Front ViewBack View Side ViewScsi Cables and Connectors Attaching the Drive StandConnecting the AC Adapter to the Hard Drive Setting Up Your LaCie Hard DriveConnecting the Power Supply Disconnecting the AC Adapter From the Hard DriveInstalling Your LaCie Hard Drive Setting the Scsi ID NumberScsi Card Verification Mac Users Software Installation Mac Users Drive Recognition Mac UsersLaCie d2 Scsi Hard Drive Setting Up Your LaCie Hard Drive Formatting and Partitioning Your LaCie Hard Drive Mac UsersPC Users FAT32 Page Technical Information User Advice When Using ScsiPower Save Multiple Scsi DevicesScsi types ConnectorsCategory Transfer rateFAT 32 vs. Ntfs FATMac OS Standard vs. Mac OS Extended Guidelines for Choosing FAT 32 or NtfsMac OS Standard Mac OS Extended Guidelines for Choosing Mac OS Standard or Mac OS ExtendedTroubleshooting Problem Questions to Ask Possible SolutionsProblem Questions to Ask Possible SolutionsMore details Is the Scsi card driver installed correctly and enabled? Before You Call Technical Support Contacting Customer SupportTechnical Support Help Hours Australia Belgium CanadaItaly Japan Netherlands Spain Sweden, Norway, and Finland SwitzerlandUnited Kingdom & Ireland Warranty Appendix 1 Scsi Questions and Answers LaCie d2 Scsi Hard Drive Appendix Scsi Q & a What is termination? Where should I place the terminator?Should I use passive or active terminators? LaCie d2 Scsi Hard Drive Appendix Scsi Q & a Glossary LaCie d2 Scsi Hard Drive Glossary Health and Safety Precautions General Use Precautions