HP StoreEver TapeAssure Software - Manual (Page 80)

The last used wrap usually displays partially written. Only fully written wraps can be
measured for margin.
To the right of the margin indicator for each wrap is a text-based bar chart that graphically
shows the margin rating. The zero in the middle represents 0% margin, and the carat (^)
represents the actual margin of the wrap. This is helpful to visualize margin across the
tape if a bad area covers more than one wrap.
◦ The Drive measurements section shows data from the error rate counters of the drives the
cartridge was used in. The summary line shows the worst margin found in the available
history. If there is a margin warning for one drive but good margin for the other drives,
then that suggests a suspect drive. Try cleaning the drive and run the Drive Assessment
test to check it. If there is a margin warning for all drives, then the cartridge itself is suspect.
Cross check this information with the Drive History section of the report.
◦ The Write/read life and Load/unload life items show cartridge life estimates based on
usage and published expected life figures with HP drives. Because HP drives are tuned
to work with genuine HP media, HP media can be expected to have a longer usage life.
•
The Configuration section shows whether the cartridge is write protected and WORM enabled.
Note that WORM is only supported with LTO3 and later generation drives.
•
The Environment section shows data for the current and previous drive environment. Watch
for warnings even in previous drives. This information can be useful to track down system hot
spots or cooling issues.
•
The Performance section shows performance data for the cartridge in the current drive, as
well as the previous two drives. Performance figures from previous drives are estimated from
the amount of data transferred and the time spent pulling tape. If less than 60 seconds of tape
pulling have occurred, then the message Not enough data is displayed because the estimate
is likely to be inaccurate.
•
The Usage section includes how much of the cartridge capacity has been used (all figures
native) and usage over the available history of previous drives. The total write/read data
volume and load count since new are also shown.
Understanding LTO support tickets
An L&TT support ticket is a collection of un-decoded device log dumps assembled into a single file
in a format specific to L&TT. If the ticket is not compressed the filename ends with .ltd; if it is
compressed it ends with .lzt. In both cases, if L&TT 4.x is installed on the local system, a ticket
can be double-clicked in Windows and the L&TT 4.x viewer will automatically be executed to
decode and view the ticket. Decoding occurs at the viewing time, which allows the latest decode
capability of L&TT to be used on even old tickets.
If you are in contact with HP support you will most likely be asked for the support ticket for your
device. In this case, once you have pulled the ticket, you can save it and then email it to HP support
as an attachment.
The decoding time varies with the increasing functionality of L&TT and diagnostic capability of the
drives over time. This section focuses on the parts of the support ticket that are most useful and
subject to less change. The details vary according to your specific configuration.
You can control the level of detail in the support ticket. The following sections assume that the detail
level is set at ‘Everything’. Note there is also a ‘Factory only’ setting allowing HP factory and
support engineers to see lower levels of log decode, but this level is restricted because the data is
complex and can be ambiguous or misleading without training. For this reason HP recommends
that you email the original ticket (.ltd or .lzt file) to HP support so they have access to this additional
information.
Within the ticket, anything of note is highlighted as follows
80 Using support tickets