HP Command View for Tape Libraries Software - Manual (Page 99)

The table displays the drive serial number, the date/time, and the effective capacity of the tape.
Use the Sample Time to filter the write health history for the tape loaded onto multiple drives between
the specified time intervals. In addition, each drive serial number is a link to the drive write health
history.
To export the report as a PDF, click Export Report at the bottom of the graph. This will allow you
to save the graph locally or email it. You can also export only the graphs or the complete report.
Life tab
A set of parameters decide the life of a tape and they deteriorate over time due to wear and tear.
Each backup leads to the generation of a Support Ticket that contains information about the quality
of the backup. These life parameters keep reducing with each backup. The Life tab shows the trend
of deterioration of the life parameters and recommends the action to be taken before the tape
becomes unusable.
The following are the life parameters of a tape and are compared to the HP recommended
specification:
•
TapeLoadLife – the remaining load/unload life of the cartridge as a percentage
•
TapeReadWriteLife – the remaining read/write life of the cartridge as a percentage
A simple regression is done on the historical data that the management station has collected over
a period of time for these life parameters. As a result, there is a trend line for each parameter. The
trend line with a greater slope value indicates that the parameter is deteriorating at a faster pace
than the others and determines the life of the tape (this parameter leads to the tape being unusable
faster than the other parameters). The screen displays the trend line of the parameter that is
degrading at the fastest pace. The trend line is then extrapolated to know when this parameter
would become 0 in time; based on this date, a set of recommendations are made for this tape.
There are three kinds of messages for the life of a tape:
•
Tape is at the end of its recommended life – if any of the tape’s life parameters are already
less than or equal to 0 based on last sample date
•
Tape is nearing the end of its recommended service life — when tape life trend data for <tape
serial number> indicates the tape will reach the end of its serviceable life within the next six
months
•
Tape is within the recommended serviceable life — when tape life trend data for <tape serial
number> indicates the tape will not reach the end of its serviceable life within the next six
months
Using TapeAssure 99