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Section 3: HP 5242-ACL Tape Drive
•
Large 8-megabyte data buffer to maintain host transfer rate
•
Self test diagnostics
2.1
Mode of Operation
When a cartridge ejects from the 5242-ACL drive following a host UNLOAD command, the autoloader
automatically loads the next available cartridge in the magazine into the drive.
2.2
Terminology
Unloaded
Semi-Loaded
Loaded
2.3
Front Panel Buttons
Magazine
Present
LED
Autoloader
LCD
Figure 29
HP StorageWorks DAT 72 (Models 5242 and 5242-ACL) User's Guide
Chapter Two
A cartridge unloads when it moves from the drive and is placed in the magazine. In this
state, the drive is off-line, and the host cannot perform any operation that would cause tape
motion (write, read, space commands). The NonStop server can issue the LOAD command
to put the tape drive on-line. Additionally, the NonStop server can execute any diagnostic
command that does not access the tape.
A cartridge semi-loads when the cartridge is in the tape drive mechanism, but the tape is
not threaded around the head. The tape drive is off-line in this state.
The tape loads at the end of the load sequence. Then the tape drive is on-line and can
execute all commands, including those that set configurations or run diagnostic tests.
Select Button
6
Eject
Load
Operator
Tape
Tape
Attention
Activity
Button
Required
LED
LED
5242-ACL front panel
Write
4-Line LCD,
E
F
COMPRESS
8-Characters per line
2.3:1
Mode
Switch
Programmable
Error-Alert LED
Compression
Indicator LED
Eject
Button
34
HP Part Number 528296-03 July 2005
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