HP StoreEver MSL6480 Tape Library User and Service Guide

• If neither the application software nor operating system detects the tape drive, or they do not
detect both the tape drive and the library:
◦ Verify that all SAS cables are securely connected on both ends. If the mini-SAS connectors
that connect to the tape drive and some HBAs will not plug in, check the key. The mini-SAS
connector on the tape drive is keyed at location four, which is the standard location for
end devices. If the connector on the cable is keyed in a different location, not only will
the connector not plug in, but the cable probably will not work.
◦ Check the length and integrity of your SAS cabling. For reliable operation, do not use a
SAS cable longer than six meters. Do not use a cable adapter or converters between the
HBA and the library.
◦ Check the SAS connectors for damage or debris.
◦ Verify that your HBA is supported by the host computer and qualified with the library.
For current HBA compatibility information, see the EBS compatibility matrix at http://
www.hp.com/go/ebs.
◦ Verify that your HBA has the latest firmware.
• If the application software or operating system detects the tape drive, but not the library:
◦ Verify that multiple LUN support is enabled on the HBA. The library uses two Logical Unit
Numbers (LUNs) to control the tape drive (LUN 0) and robotic (LUN 1). The library 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 library.
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 the SAS host adapter is installed correctly. Refer to the manual that came with
your host adapter for installation and troubleshooting instructions. Pay particular 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.
◦ Verify that the proper device driver is installed for the SAS host adapter.
• If the library 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 library 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.
If you continue to have problems with a SAS library, check the following:
• Ensure that the library is compatible with the SAS host adapter and backup application you
plan to use. For a list of compatible SAS host bus adapters and application software, check
Detection problems after installing a SAS drive 135