Sun Microsystems StorEdge L280, Руководство пользователя

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2-4 StorEdge L280 Service Manual • February 1998
2.1.4 Reliability
2.1.5 Environmental Specification
Temperature and humidity is limited by the media specification of 10
˚
C-40
˚
C
operating and 20%-80% noncondensing. Humidity and temperature is also limited to
26
˚
C wet bulb temperature. See Section 1.1.1, “Environmental Specifications,” on
page 1-4 for more information.
2.1.6 Stacker and Library Functionality
The Autoloader has three modes of operation. See Section 3.5, “Top Level Menu
Options,” on page 3-9 for more information.
■
Autodetect mode: Defaults to Stacker mode until the Autoloader receives a
changer command, which changes it to Random mode until it is power cycled.
■
Stacker mode: Loads each tape sequentially after each drive unload request.
■
Random mode: Allows random access to tapes per command to the Autoloader.
2.1.7 Autoloader Firmware
The autoloader firmware consists of the following five modules (
FIGURE 2-1
on
page 2-5):
■
Interface manager
■
Front panel manager
■
Diagnostics manager
■
Motion manager
■
Transport motion controller
TABLE 2-1
Reliability
Part Probable Life Span
Autoloader MSBF 200,000 Swaps
Magazine life 45,000 Swaps
Tape cartridge 10,000 Swaps
Drive 50,000 Load/Unload Cycles