HP 350546-B21 HP StorageWorks Ultrium Tape Drive Removable Model Getting Start - Page 39

The server boots but does not recognize the tape drive Possible reason Recommended action The power or SCSI cable is not connected Check that the cables to the tape drive are firmly properly. connected. Ensure that the SCSI cable is LVDS- compliant and does not have any bent pins. Replace, if necessary. The SCSI bus is not terminated correctly. Check that the SCSI bus is actively terminated. (Refer also to the documentation for your SCSI controller and any other SCSI devices you may have.) The tape drive's SCSI ID address is not unique. Make sure that each device connected to the SCSI controller has a unique SCSI ID. Remember that 7 is normally reserved for the host bus adapter. (You can run HP Library & Tape Tools to check the SCSI IDs of each device attached to the SCSI bus, see page 29.) The computer no longer recognizes the tape drive Possible reason Recommended action You powered up the drive or added it to the tape array after the host system was turned on. The host computer system only identifies which IDs are present on SCSI buses after power-on or a reset. To make the host look for devices on the bus, you need to reset the host. You should be able to do this using the SCSI management software on your computer. As a last resort, you could turn the host system off and on again You changed the drive's SCSI ID after the • If you have replaced a drive that was host system was turned on. recognized by the host, the host should recognize the new drive at the same SCSI ID as its predecessor. • If you make any changes to SCSI IDs (on the back on the tape array), you need to reset the bus for the host to recognize the changes. The drive is not inserted correctly. Check that the drive is properly inserted into the tape array so that it mates with the connections at the rear of the enclosure. The extraction lever should be pushed in, locking the drive in position. 37