Dell TL2000 manual Library Recovery Problem Determination, Other Problems

Tape library performance: The library is not efficiently backing up data

1.Check the network bandwidth from the host computer. If you are backing up data over a network, consider comparing to a local-only backup.

2.Ensure that the library and tape drive are on their own SCSI bus and not daisy-chained to another tape drive or to the hard drive being backed up.

3.Ensure that the library is connected to a LVDS SCSI bus and there are no single-ended (SE) devices on the same bus, because this will cause the entire bus to negotiate down to SE speed.

4.Use an Ultra160 SCSI bus and high-quality cabling with the library.

Customer Replaceable Units (CRU) and Service Spares

Drive Sled	See “Isolating Drive Sled Problems” on page 7-10.
Power Supply	See “System Status” on page 2-6 and“Isolating a Power Supply Problem” on page
	7-8.
Library Controller Card	See “Isolating a Library Controller Card vs. Accessor Enclosure Problem” on page
	7-11.
Library Enclosure (Service	See “Isolating a Library Controller Card vs. Accessor Enclosure Problem” on page
Spare)	7-11.

ITDT

Performance Test duration varies

Items affecting the duration of the test are:

vThe level of adapter device driver

vYour adapter model and type

Other Problems

Web User Interface problems	See “Isolating Web User Interface Problems” on page 7-11.
Bar code scanner problems	See “Isolating Accessor Scanner Problems” on page 7-12.
Host Attachment Interface	See “Isolating Host Attachment Interface Problems” on page 7-12
problems
Need help with a library
password	Contact technical support.
Key path diagnostic not	This diagnostic is available with library firmware level greater than 6.xx. Refer to
working	“Verifying/Updating Firmware” on page 4-17to determine the level of firmware
	on your library. If necessary, visit http://support.dell.com to download the latest
	levels of firmware for your library.
Auto Clean status displayed as	If Auto Clean is enabled and a cleaning cartridge is not present, or if a cleaning
″Chk Media/Rsvd Slot?″ on the	cartridge is present but not in the reserved slot, Auto Clean status will show ″Chk
Web User Interface System	Media/Rsvd Slot?″ and Status will show a green check mark and the words
Status screen.	″Media Attention.″

Library Recovery Problem Determination

The 2U and 4U library firmware will generally retry failed operations up to three times before posting a failure to complete the operation, or, in some situations, proceeding with an operation that can be completed in an alternative manner. Of course, if the operation is successful within the allotted retry count, the appropriate retry counter is updated and recorded in the retry log and the next library operation will commence.

For example, failure to pick or place a cartridge from or to a designated cell or drive location after exhausting the retry count will result in a failed operation with the appropriate error code. However, failure to detect a particular cell location by sensing the prism fiducial located on the cell shelf because it is missing or damaged will eventually result in the cell location being located by the gripper, bar

Chapter 7. Troubleshooting 7-7