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ExpressPCI UL4S
Single-channel Ultra320-to-PCI-X SCSI Host Adapter with VpathTM Technology
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| The ATTO ExpressPCI UL4S offers the latest in SCSI storage connectivity, delivering the ultimate data-delivery performance of up to 320 MB/sec. The UL4S which features the new PCI-X bus interface and incorporates improved SCSI standards, is ideal for delivering data to the most demanding Enterprise server and high-end workstation environments. Enabled with ATTO's exclusive VpathTM Technology, the UL4S offers users the flexibility of connecting high-speed Ultra320 devices externally and slower legacy devices internally, or vice versa, without sacrificing the performance of the high-speed device. This allows users to take full advantage of Ultra320 and legacy speeds simultaneously. |
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Benefits
- Ultra320 SCSI performance enables high throughput for servers and high-end workstations
- One external and one internal channel allow users to attach Ultra320 drives externally and slower legacy devices internally for aggregate throughput of up to 320 MB/sec.
- Supports up to 30 SCSI bus IDs - 15 each on external and internal channels
- Supports Low Voltage Differential (LVD) for cabling up to 12.5 meters per bus
- Compatible with Single-ended SCSI devices, providing cable distances up to 3 meters
- Supports all five original requirements of Ultra3 SCSI:
- Double Transition Clocking
- Domain Validation
- Quick Arbitration Select
- Packetization
- Cyclical Redundancy Checks
- Additionally, the UL4S supports Ultra320-specific features such as Free-Running Clock, Read/Write Data Streaming, Flow Control, Training Patterns, Pre-compensation, and Asynchronous Information Protection (AIP)
- Features Advanced Data Streaming (ADS™) Technology for controlled acceleration of data transfers
- Embedded RISC processor for low-overhead operation
- Bus Mastering capabilities eliminate CPU processing time as a bottleneck
- Tagged Command Queuing allows multiple commands to be processed in any order
- Disconnect/Reconnect eliminates wait time between transfers
- Backward compatible with PCI-based systems, preserving investment in legacy systems
- 133 MHz PCI-X provides up to 1 GB/second data transfers, allowing full Ultra320 performance
- Fully backward compatible with 66 MHz and 33 MHz PCI specifications
- Fully compatible with 64-bit and 32-bit PCI busses
- Supports PCI hot swap specifications for high-end servers
- Robust Driver Support
- Windows® Server 2003, XP/2000/NT
- Mac® OS X
- Linux
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| Hardware Specifications
SCSI Interface:
- 320 MB/sec. data-transfer rates
- One (1) external and one (1) internal high-density 68-pin connector
- Low Voltage Differential (LVD) signaling
- Support for tagged command queuing
- Backward compatible with Ultra 160, Ultra2, Ultra/WIDE, Fast/WIDE and Narrow SCSI devices
Advanced SCSI:
- Supports dynamic bus rescan (OS X)
- Double transition clocking
- Domain validation
- Cyclical Redundancy Checking (CRC)
- Packetization
- Quick Arbritration Select (QAS)
- ASPI compliant (for PC users)
- Bootable from attached disks
- Support for disconnect/reconnect
- Support for multiple block sizes
Accelerated PCI Bus Management:
- PCI-X bus master rate of 1 GB/sec.
- PCI-X 1.0a compliant
- PCI 2.2 and PCI 99 compliant
- 64-bit/133 MHz PCI-X (backward compatible with standard PCI)
- General Characteristics:
- Automatic termination
- Upper-byte termination for Narrow devices
- Flash ROM BIOS for easy field upgrades
- PC 99 compliant
- Plug and play compatible
- Includes ATTO ExpressPro-Tools™ and ATTO Configuration Tool formatting
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Software Specifications
Driver Support:
- Windows Server 2003
- Windows XP
- Windows® 2000
- Mac® OS X
- Linux
Advanced Data Streaming (ADS™):
- Improved PCI system bandwidth use
- Optimized SCSI-3 algorithms
- Tagged command queuing
- Embedded RISC I/O processor
RAID kits available
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Environmental and Physical Characteristics
Dimensions:
- Length 6.521"
- Height 4.2"
Operating Environment:
- Temperature: 0-45º C
- Humidity: 10-90% non-condensing
- Airflow: 100 LFM (min)
Reliability:
- MTBF = 150,000 hours
- MTTR < 15 Minutes
Power:
- 0.75 typical/2.0 max. Amps @ + 5.0 VDC
- 0.05 Amps @ + 12.0 VDC
PCI Signal Compatibility:
- 3.3 Volts/5 Volts universal
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