ATTO Technology operation manual Appendix B Scsi host adapter selection guide, Specific features

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Appendix B SCSI host adapter selection guide

ATTO Technology offers a number of SCSI and Fibre Channel solutions for storage. The following chart compares the features of ExpressPCI SCSI host adapters.

Supported platforms: Sun Solaris; Linux; NetWare; SCO Unix; Windows 2000, 95/98, NT, and Macintosh OS and OS X.

Complete RAID packages are also available and include an ExpressPCI SCSI host adapter, ExpressRAID software and appropriate cable(s). Add "-KIT" suffix to host adapter product code (i.e. EPCI-UL3D-KIT)

Specific features

Single Channel

ExpressPCI Ultra 320

Express PCI Ultra 3

Express PCI Ultra

 

 

 

Wide

 

 

 

 

Max. transfer rate

320 MB/sec

160 MB/sec.

40 MB/sec.

 

 

 

 

LVD

￿

￿

 

 

 

 

 

HVD

 

 

 

 

 

 

 

64-bit

￿

￿

 

 

 

 

 

32-bit

￿

￿

￿

 

 

 

 

33/66 MHZ

￿

￿

 

 

 

 

 

133 MHZ

￿

 

 

 

 

 

 

Bus ID support

30

30

15

 

 

 

 

Part number

EPCI-UL4S

EPCI-UL3S

EPCI-PSC

 

 

 

 

 

 

 

 

Dual Channel--- 2

ExpressPCI Ultra 320

Express PCI Ultra 3

 

independent channels

 

 

 

 

 

 

 

Max. transfer rate

640 MB/sec

320 MB/sec.

 

 

 

 

 

LVD

￿

￿

 

 

 

 

 

64-bit

￿

￿

 

 

 

 

 

32-bit

￿

￿

 

 

 

 

 

33/66 MHZ

￿

￿

 

 

 

 

 

133 MHZ

￿

 

 

 

 

 

 

Bus ID support

30

30

 

 

 

 

 

Part number

EPCI-UL4S

EPCI-UL3D

 

 

 

 

 

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Contents Page Page Contents Scsi Connectors FeaturesPower Requirements Environmental and Physical SpecificationsFeatures, benefits Glossary Scsi is a key technology for storageGlossary System requirements Installing the ExpressPCI Scsi Host AdapterInstallation Atto ExpressPCI PSC Scsi adapter Examples ConnectorsCable types Termination Connection considerationsWide devices first closest to the connector To set up cabling and terminationCables, termination Windows Server 2003 & Windows 2000/XP Installing and Updating Device DriversDrivers 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 Analyze your I/Os Increase transfer sizeTroubleshooting Troubleshooting FCC standards radio and television interference Appendix a Standards and compliancesAppendix B Scsi host adapter selection guide Specific featuresExpressPCI Express PCI Appendix C Fibre Channel host adapter guideAppendix 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.