Actidata actiLib Autoloader 2U, Руководство пользователя и обслуживания

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4.4 LUN scanning
The actiLib Library 2U uses a single SCSI ID per drive and dual LUNs to control the tape drive (LUN
0) and library robotic (LUN 1). The library requires an HBA that supports LUN scanning. If it is not
enabled, your host system will not scan beyond LUN 0 and will fail to discover the library. It will just
see the tape drive.
IMPORTANT:
Some HBAs, such as RAID controllers, do not support LUN scanning.
4.4.1
Preparing the host
IMPORTANT:
Use proper procedures to prevent electrostatic discharge (ESD) (see use wrist-
grounding straps and anti-static mats when handling internal components.
Follow these general guidelines:

Make sure that your backup application supports the SCSI host bus adapter.

If the host server is connected to a network, check with the system administrator before turning off
power.

Install a suitably rated HBA. Remember that if there are any SE devices on the same SCSI bus,
the entire SCSI bus will negotiated down to SE speed and severely degrade performance and limit
cable length.

Make sure that LUN scanning is enabled on the SCSI host adapter.
4.4.2
Verifying the connection

Depending on the server configuration, you may need to change the SCSI IDs of the library.

When the host server is powered on, install the software and/or driver(s) that are compatible with
the library. Backup software packages may require additional software or licensing to
communicate with the library robotics.

Ensure the library is properly terminated. If the library is the only SCSI device, other than the SCSI
host adapter on the selected SCSI bus, it must be terminated. Likewise, if the library is physically
the last SCSI device on the SCSI bus, it must be terminated. Only the devices physically located
at the beginning and end of the SCSI bus should be terminated.

Confirm the host server’s operating system recognized the library in Microsoft® In Windows® XP,
Windows® Server 2003 or in Windows 2000® by going to: Settings > Control Panel > System >
Hardware > Device Manager > Tape Drive and/or Media Changer.
For more information on verifying the connection of SCSI devices, consult the operating system
documentation.