User guide

HP-supplied barcode labels will provide the best results. Barcode labels from other sources can be
used, but they must meet the following requirements:
• ANSI MH10.8M-1983 Standard
• Number of digits: 6+2
• Background reflection: greater than 25 percent
• Print contrast: greater than 75 percent
• Ratio: greater than 2.2
• Module: >= .254 mm
• Print tolerance: - 57 mm
Additional Requirements:
• Height of the visible portion of the barcode: 10 mm -2 mm
• Length of the rest zones: 5.25 mm - 0.25 mm
• No black marks should be present in the intermediate spaces or rest zones
• No white areas should be present on the bars
CAUTION: The misuse of barcode technology can result in backup and restore failures. To ensure
that your barcodes meet HP quality standards, always purchase them from an approved supplier
and never print barcode labels yourself. For more information, see the order form provided with
the library, as well as the Barcode Label Requirements, Compatibility and Usage white paper
available from http://www.hp.com/support.
Installing barcode labels
Each cartridge in the library must have an external label that is operator and machine readable
to identify the barcode number. Most manufacturers offer cartridges with the labels already applied
or with the labels included that you can attach.
Duplicate barcodes are not supported even if you have mixed media or multiple partitions in the
library. If the library has cartridges with identical barcode labels, the library will issue an event
notifying you of the issue. Areas in the LMC where media IDs are listed will show information for
the first cartridge, but the cartridge with the duplicate barcode label will not be listed.
All barcode labels are applied to the front of a cartridge. Peel off the label and place it on the
cartridge. Verify that the label is aligned so that the numbers appear above the barcode, and so
that the label is not crooked on the cartridge. Figure 24 (page 171) shows an example of barcode
label alignment.
CAUTION: Do not place a barcode label on top of a cartridge. Doing so can cause inventory
operations to fail.
170 Working with cartridges and barcodes