86 ETERNUS LT20 S2
Troubleshooting Table Troubleshooting
Bad performance
Ê Try a new cartridge. A marginal cartridge can
cause performance problems due to bad spots
on the tape requiring retries.
Ê Backing up data that compresses poorly or is
already compressed will lower performance.
Ê Check the size of the files. Small file size can
impact performance.
Ê Confirm that the backup application is utilizing
block sizes of at least 32KB, preferably 64KB.
Refer to the backup application documentation
for details.
Ê Check the network bandwidth from the host
computer. If you are backing up data over a
network, consider comparing to a local-only
backup.
Ê Make sure the backup server has enough
memory to handle the bandwidth of the
backup or restore.
Ê Clean the tape drive. See section “Cleaning
Tape Drive” on page 78 for instructions.
Media attention LED issues
Contamination by loose
debris
Avoid contamination by ensuring that the library is
installed in a clean, contamination-free
environment. Cartridges should be stored verti-
cally in their plastic cases. Continue cleaning the
tape drive as needed.
Non-acclimated media A cartridge should be acclimated for at least 24
hours before being used, particularly if it has been
stored at a substantially different temperature or
level of humidity than the library.
Problem Solution
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