2.5.4.4
Cooling System
The library is cooled by fresh air that is drawn into the cabinet through filters in the
front panel. The air is exhausted out the rear of the library. Each tape drive and
power supply module has a fan.
2.5.4.5
Barcode Reader
A barcode reader is included with all RLS models. The barcode reader can scan all
cartridges in the RLS (except those within tape drives), as well as cartridges
introduced into the I/O port. Barcode Labels
Pre-printed barcode labels, which are both human and machine-readable, are
available from a number of sources, including Qualstar.
Barcode labels must conform to ANSI/AIM BCI-1995, Uniform Symbology
Specification Code 39. Please refer to PIN-040 at www.qualstar.com for more
information.
By default, the RLS expects no modulus 43 check characters at the end of each label,
but can be configured to expect the check character. All of the labels within the RLS
must match the check character configuration. If the RLS is configured to expect a
check character and the labels do not have a check character, then most barcodes will
not read, and if they do read, then they will miss the last character. If the RLS is
configured for no check character, and labels with check characters are used, then all
of the labels will show an extra character.
2.6
RLS Operation
2.6.1
Medium Changer Control System
There are several microprocessors utilized throughout the RLS to form an efficient
distributed control system. All of the microprocessors utilize FLASH memory for
storing their operating firmware. In addition to its own needs, the executive processor
firmware contains the firmware images for all of the other microprocessors in the
RLS. Thus all of the RLS operating firmware gets updated with a single code load to
the executive processor. The code load is accomplished over the Ethernet interface
using an Internet browser. The updates are matched to the revisions of all the circuit
boards to insure compatibility. Power loss during uploading or re-programming will
not cause any harm.
2.6.2
Inventory Database
The medium changer maintains an Inventory Database that contains data associated
with each storage location. The database contains such information as cartridge
presence, barcode label data and cartridge source element address. In addition, the
library collects the Memory-In-Cartridge data from each tape cartridge that is
inserted into a tape drive. This information is available using the Control Panel or the
Q-Link remote management facility. A subset of this is available to the host using the
SCSI command set.
511002
Rev
07-01-19
Product Description
2-11
