Bull ESCALA E250, Использование и обслуживание, Страница: 48 / 162

3-8
Setup Guide
Handling MLR Tape Cartridges
Information in this paragraph describes operating and storage conditions including
temperature, relative humidity, and maximum wet bulb data.
Warning: The manufacturer has specified a set of temperature and humidity ranges in
which the 1/4-inch data cartridge can operate with ease. Only regular cleaning procedures
are required when operating the cartridge within this range. The risk of possible data loss is
increased if 1/4-inch tape cartridges are operated, stored, or shipped outside the
temperature or humidity ranges shown in the following table.
Before using a data cartridge, allow it to acclimate to the operating environment (24 hours or
the amount of time it has been exposed to dissimilar conditions).
Acclimation is necessary for any data cartridge that has been exposed to a different
humidity environment or a temperature change of 11
° C (20 ° F), or more.
• Recommended operating environment:
– Temperature 5
°
C to 40
°
C (41
°
F to 104
°
F)
– Relative humidity 20% to 80% non condensing
– Wet bulb 26 ° C (79 ° F).
• Recommended storage environment:
– Temperature -30 ° C to 60 ° F (-22 ° F to 140 ° F)
– Relative humidity 5% to 90% non condensing.
Cleaning the MLR Drive
Clean the recording head of the tape drive after the first 2 hours of tape movement when
you are using new tape cartridges. If you are using QIC-2GB, QIC-1000 cartridges and the
cartridges are not new, clean the recording head after every 8 hours of tape movement.
Use the instructions and materials provided in the cleaning kit to ensure proper operation of
the tape drive.
Warning: The drive must be cleaned with a dry process cleaning cartridge. The wet
cleaning cartridges used on old QIC models are prohibited and may damage the drive.
Tape Cartridge Data Efficiency
Note: For maximum efficiency, operate the 1/4-inch tape drive in the streaming mode
whenever possible.
The 1/4-inch tape cartridge efficiency is defined as the amount of data that can be stored on
the cartridge and the rate at which the data can be read from the tape cartridge. When in
use, the tape in the cartridge is moved at a constant speed of 72 inches per second. The
speed for the QIC-2GB is 70.9 inches per second.
The following variables affect the amount of data that can be stored on a tape cartridge:
• Streaming mode or non-streaming mode
• Size of the data file
• Number of file marks per file
• Tape length
• Size of post/preamble.