HP A3716A DDS-3 Autoloader User's Manual - 3716-96001

Glossary-4
SCSI
Small Computer System Interface. A standard interface allowing many
different kinds of device, such as disk drives, tape drives, CD-ROMs and
others, to be accessed by the host computer.
sequential mode
Another name for stacker mode.
stacker mode
In stacker mode, cartridges are used sequentially from the autoloader
magazine. The cartridge that you select, or by default, the cartridge in the
lowest numbered slot in the magazine, is used first. When it is full, the
changer mechanism automatically moves it back to the magazine, and then
moves the cartridge from the next highest numbered slot to the drive. This
continues until all the cartridges have been used.
You can select the first cartridge of the sequence by pressing the front panel
Select button, and then load it by pressing the Load Cartridge button.
If cartridges are to be loaded under host control, the device must be in
random mode.
tape log
The tape log contains details of the history of the cartridge, and the total
numbers of groups written, of RAW retries, of groups read, of C3 ECC
retries, and of loads. The log is copied into RAM when the cartridge is
loaded, updated as the cartridge is used, and loaded back into the system
area on the tape when the cartridge is unloaded. Note that if the cartridge is
write-protected, the tape log cannot be updated.
tape mark
A filemark or setmark.
TapeAlert
A diagnostic tool developed by HP to monitor tape drive operations and send
messages warning of existing or potential problems to the backup operator.
Standard TapeAlert is a built-in feature of the HP A3716A. TapeAlert for
OpenView is additional software that sends TapeAlert messages over the
network to the network administrator, allowing the monitoring of remote
tape drives and autoloaders. TapeAlert requires compatible backup
software, which will display the HP TapeAlert logo.
TapeAlert log
A set of 64 flags are held in the TapeAlert log and indicate faults or predicted
faults with the drive or media. For example, a flag is set if the drive detects
that a cartridge is not Media Recognition System. By reading this log, host
software or operating system can inform users of existing or impending
conditions, and can give advice. For example, the software might
recommend that you discard the cartridge and use a Media Recognition
System one.