Thermal Specifications; Over Temperature Condition - Tandberg Data SDLT220-320 INTEGRATION Manual

CHAPTER 4

4.1 Over Temperature Condition

This chapter presents the results of extensive experimentation and measurements
of drive temperatures, and the resultant impact on SDLT 220/320 drive
performance.
An Overtemp condition is defined to be when the calculated Tape Path Temp =
52 degrees C. At that point, the tape is rewound, unloaded, and ejected if not in a
library. If the drive is in a library, the tape does not eject.
C
AUTION
The front temperature sensor is the point used to calculate drive temperature (even
though it is not the hottest point inside the drive). The calculated Tape Path Temp
for the SDLT 220/320 drive is derived using the following formulas:
Embedded bezel Tape Path Temp = Front Sensor Temp + 3 degrees C
•
Library bezel Tape Path Temp = Front Sensor Temp + 6 degrees C
•
If not in a library, and if the drive temperature exceeds the operating threshold, any
current tape operation is aborted, the tape is rewound, unloaded, and ejected from
the drive. SCSI status then indicates that the drive is in the over temperature
condition.

Thermal Specifications

: Although the Overtemp condition occurs when the Tape
Path Temp = 52 degrees C, Quantum recommends the
operating environment of the drive be maintained such
that the temperature of the tape path not exceed 50
degrees C; this provides a 2 degrees C margin of safety.