ATTO Technology operation manual Troubleshooting

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5 Troubleshooting

This chapter contains solutions for the most common problems you might encounter. If you need additional assistance, please refer to the ATTO Technology web site (www.attotech.com) or contact an ATTO Technology authorized representative.

9￿Check each cable connection on every device. Verify all cables are in proper working condition. Loose or broken cables are often the cause of errors or problems.

9￿Check that your SCSI devices are plugged into an AC outlet and are turned on before you add power to your computer.

9￿Verity that all devices and busses are properly terminated. See Chapter 3.1 for more information.

9￿Verify that all devices attached to the ATTO ExpressPCI SCSI adapter have unique SCSI IDs. ATTO ExpressPCI SCSI adapters have a default SCSI ID of 7.

9￿If the same device shows up at several different SCSI IDs, either its SCSI ID is set the same as the ATTO ExpressPCI SCSI ID, or the cable is defective.

9￿If a device doesn’t appear and cables and termination are set properly, try lengthening the SCSI Reset Delay using the ExpressPCI Utilities found on the CD that came with your host adapter.

9￿PC users should make sure that SCSI adapter firmware and Windows drivers are at the same revision level. Unless indicated otherwise, the latest drivers and firmware can be downloaded from the ATTO Technology website (www.attotech.com)

17 ATTO Technology ExpressPCI Ultra/WIDE SCSI Host Adapters Installation and Operation Manual

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Contents Page Page Contents Features Power RequirementsEnvironmental and Physical Specifications Scsi ConnectorsFeatures, benefits Scsi is a key technology for storage GlossaryGlossary System requirements Installing the ExpressPCI Scsi Host AdapterInstallation Atto ExpressPCI PSC Scsi adapter Examples ConnectorsCable types Connection considerations TerminationTo set up cabling and termination Wide devices first closest to the connectorCables, termination Installing and Updating Device Drivers Windows Server 2003 & Windows 2000/XPDrivers Re-flashing Firmware in Windows Updating Drivers and Re-flashing Firmware in Mac OS Set registry for large block transfers Set up RAID groups with Atto ExpressRAIDUse the latest Atto driver Increase transfer size Analyze your I/OsTroubleshooting Troubleshooting Appendix a Standards and compliances FCC standards radio and television interferenceSpecific features Appendix B Scsi host adapter selection guideAppendix C Fibre Channel host adapter guide ExpressPCI Express PCIAppendix D Contact Atto Technology, Inc

ATTO ExpressPCI Ultra/WIDE SCSI Host Adapters Express PCI PSC: Single-Channel Single-Ended Ultra/WIDE ExpressPCI DC: Dual-Channel Single-Ended Ultra/WIDE specifications

ATTO Technology is a leading provider of cutting-edge storage connectivity solutions, and their line of ATTO ExpressPCI Ultra/WIDE SCSI Host Adapters has showcased the company’s commitment to performance and reliability for demanding data applications. Specifically, the ExpressPCI PSC (Single-Channel Single-Ended Ultra/WIDE) and the ExpressPCI DC (Dual-Channel Single-Ended Ultra/WIDE) models cater to different user needs while maintaining industry standards.

The ATTO ExpressPCI PSC is designed for environments where a single channel is sufficient to meet the connectivity demands. This single-ended adapter supports Ultra/WIDE SCSI technology, enabling data transfer rates of up to 40 MB/s. The PSC is perfect for users who require efficient storage solutions without the complexity of handling multiple channels. With its robust design, this adapter excels in various applications, from small business servers to high-performance workstations, offering reliability in demanding environments.

On the other hand, the ATTO ExpressPCI DC doubles the capability with its dual-channel architecture. This feature allows for two independent SCSI buses, effectively doubling the potential data throughput. By utilizing ultra/WIDE SCSI technology, the DC can achieve a combined throughput of 80 MB/s, making it an optimal choice for users needing higher performance for tasks such as video editing, data intensive applications, and backups. The dual-channel configuration provides advantages in multitasking, enabling the simultaneous operation of multiple drives or devices.

Both models incorporate advanced technologies such as automatic bus termination and active negation, ensuring optimal signal integrity and reliability. Additionally, ATTO’s exclusive Advanced Data Flow Management technology enhances performance by intelligently managing data transfer to optimize bandwidth utilization, which is key in environments where data transfer speed and reliability are crucial.

Another noteworthy characteristic is the high compatibility with various operating systems and SCSI devices, making the ExpressPCI Ultra/WIDE SCSI Host Adapters versatile and easy to incorporate into existing systems. They support a wide range of SCSI drives and peripherals, ensuring that users can leverage their investment in both current and future technologies. In summary, the ATTO ExpressPCI Ultra/WIDE SCSI Host Adapters—PSC and DC—represent robust solutions that blend speed, reliability, and flexibility, catering to the diverse needs of businesses and advanced users alike. With their proven performance, these adapters continue to be an important asset in high-demand data environments, showcasing ATTO's dedication to innovation in the storage connectivity realm.
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