Scsi Problems - HP AlphaServer TS15 Owner's Manual

7.10 SCSI Problems

SCSI problems are generally manifested as data corruption, boot problems, or poor
performance.
Check SCSI bus termination.
•
Cable is properly seated at system board or option connector.
•
Bus must be terminated at last device on cable or at physical cable end.
•
No terminators in between.
•
Old 50-pin (narrow) devices must be connected with wide-to-narrow adapter (SN-
PBXKP-BA). Do not cable from the connector on the card.
•
Using 50-pin devices on the bus may significantly degrade performance.
Any external drives must be connected to their associated card, and these cards must have
no internal drives connected to them. Use a separate external controller card.
•
Ultra-wide SCSI has strict bus length requirements.
•
SCSI bus itself cannot handle internal plus external cable.
•
Use a separate card for external devices and terminate properly.
7-12 hp AlphaServer TS15 Owner's Guide