HP Command View for Tape Libraries Software User Manual

Page 95

Advertising
background image

Table 30 Information available from the LTO Tape Properties window Last Used Drive tab

(continued)

Description

Item

An identifier that distinguishes the firmware among
multiple possible variants.

Firmware Personality

Configuration

Usually set by the backup application. If enabled, the
drive will perform hardware data compression. Refer

Data Compression

to the backup application to configure data compression
for backups.

Usually set by the backup application. If prevented then
the tape cannot be removed from the drive. Normally,

Media Removal (application controller)

media removal is enabled after the backup is complete
but if the backup aborts it is possible that media removal
will still be prevented. Refer to HP support documentation
for resolution.

Read/Write health (last loaded tape)

A measure of the amount of tape used to write high
quality data to the last loaded tape with the amount of
data written to the tape since it was last loaded.

Write Health

Even if the warning is reported, the data will still have
been written at high quality (unless the drive reported
an error) but more tape was used than recommended
by HP. A warning will normally trigger an alert. If
appropriate, maintenance recommendations are made,
such as to clean the drive and/or replace the tape. HP
recommends the use of HP media for maximum
confidence.

A measure of the ease with which data was read back
from the most recently loaded tape with the amount of
data read from the tape since it was last loaded.

Read Health

Even if the warning is given, the data will have been
read back correctly (unless the drive reported an error)
but more error correction was required than
recommended. Note that a warning will normally trigger
an alert. If appropriate, maintenance recommendations
are made such as to clean the drive and/or replace the
tape. HP recommends the use of HP media for maximum
confidence.

Drive Life

An estimate of the percentage of remaining head life
based on the amount of tape passed over the head

Head Life

compared with worst case life expectancy testing in a
clean environment. HP recommends HP media for
increased head life.

If a life warning is shown, the drive should be replaced
at the next maintenance period. HP recommends HP
media for increased head life.

An estimate of the percentage of remaining reposition
life based on the number of changes in direction of the

Reposition Life

tape over the life of the drive compared with the worst
case life expectancy in a clean environment. HP
recommends HP media for increased reposition life.

If a life warning is shown, the drive should be replaced
at the next maintenance period. HP recommends HP
media for increased reposition life.

Using TapeAssure

95

Advertising