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

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Dell TL2000 Library Recovery Problem Determination, Customer Replaceable Units CRU and Service Spares, Other Problems