HP StorageWorks 1/8 User's And Service Manual page 108

• Check the SCSI ID and change it if necessary. The Autoloader is pre-configured to SCSI ID 4.
Depending on other devices attached to the same parallel SCSI bus and their SCSI IDs, you
may need to change the SCSI ID before using the device. Review the manuals for the other
devices on the parallel SCSI bus or your operating system to determine which SCSI IDs are
currently in use. Change the SCSI ID with the OCP (see
SCSI devices (Configuration > Change
configuration" on page 64).
• Verify that all parallel SCSI cables are securely connected on both ends. Check the length and
integrity of your parallel SCSI cabling. Check the parallel SCSI connector for bent pins. The
length of the internal parallel SCSI cabling inside the device is 0.5 m (1.6 ft). This length must
be included in any calculations of cable length.
• For LVD SCSI, the maximum length with only a single device on the parallel SCSI bus is
25 m (82 ft).
• For Ultra 320 or multiple devices on an LVD bus, the maximum combined internal/external
length is 12 m (40 ft).
• If you have a combination of LVD and SE devices on the bus, the maximum cable length
reverts to the SE specification, which for Ultra devices is 3 m (10 ft) for four or fewer devices,
and 1.5 m (5 ft) for more than four devices.
• If the application software or operating system detects the tape drive, but not the Autoloader:
• Verify that multiple LUN support is enabled on the HBA. The device uses two Logical Unit
Numbers (LUNs) to control the tape drive (LUN 0) and robotic (LUN 1). The device requires
an HBA with multiple LUN support and multiple LUN support must be enabled on the host
computer. When multiple LUN support is not enabled, the host computer can see the tape
drive, but not the Autoloader.
NOTE:
Many RAID or array controllers do not provide multiple LUN support.
• If the application software or operating system does not detect any devices on the HBA:
• Verify that your parallel SCSI host adapter is installed correctly. Refer to the manual that came
with your parallel SCSI host adapter for installation and troubleshooting instructions. Pay par-
ticular attention to any steps describing configuration settings. Make sure that the host adapter
is properly seated in the motherboard slot and the operating system correctly detects the host
adapter. Make sure that the proper device driver is installed for the parallel SCSI host adapter.
• If the Autoloader is detected by the operating system, but not by the application software:
• Refer to the documentation included with your backup application for instructions on how to
verify proper installation. Some backup software packages require an additional module to
communicate with the robotics.
• If the Autoloader is detected by the operating system, but is listed as an unknown or generic
device:
• Make sure that the proper device driver, if applicable, is installed for the device. Check your
software provider's website for the latest drivers and patches.
NOTE:
Many backup applications use their own drivers. Before installing a driver, make sure it is not
in conflict with the application software.
108 Troubleshooting
Changing the SCSI address — parallel
Drive)" on page 92) or RMI (see Changing the drive