Compaq AlphaServer ES40 Dokumentacja Strona 175

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Configuring and Installing Components 5-41
5.16
External SCSI Expansion
External SCSI devices, such as tabletop or rack-mounted storage devices, can be
connected to the system using PCI-based SCSI adapters. Use the following
rules to determine if a particular device can be used:
The device must be supported by the operating system. Consult the
supported options list.
Do not exceed the maximum number of devices supported on the SCSI
controller to be used.
Each device on the bus must have a unique SCSI ID.
The entire SCSI bus length, from terminator to terminator, must not exceed
the following limits:
Fast differential SCSI 6 meters
Fast single-ended SCSI 3 meters
Ultra-wide SCSI 1.5 meters
Ultra 2 SCSI 6 meters
Ensure that the SCSI bus is properly terminated and that no devices in the
middle of the bus are terminated.
For best performance, wide devices should be operated in wide SCSI mode.
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