About Ultra SCSI
Ultra SCSI (sometimes referred to as Fast-20, not to be confused with Fast or Fast & Wide), is part of the SCSI-3 specification. Ultra SCSI allows for faster data transfer rates than SCSI-2.
Ultra SCSI Considerations to Remember
In order to utilize Ultra SCSI you must have both an Ultra SCSI card (such as the JackHammer) and an Ultra device. Ultra SCSI's high data transfer rate means that the movement of the data is more sensitive to "noise" in the data path. To ensure optimal performance, StreamLogic recommends that you:
- Limit total cable length -- including the cabling between devices and cabling inside the devices -- to 1.5 meters (about 5 feet).
- Use only the highest quality cables.
Note: To maximize your system's performance, the JackHammer should be dedicated to internal SCSI devices and another Ultra Wide SCSI-3 differential PCI card dedicated to external devices.