Exabyte 1X7 LTO User Manual

O

CTOBER

 2006

The autoloader’s power-on sequence time is approximately:



60 seconds when the autoloader contains seven cartridges with bar code 

labels.



160 seconds when the autoloader contains seven cartridges without bar 

code labels.

An application can issue a command to the autoloader to check all cells for 

cartridges and scan bar code labels. After checking the cells, the autoloader 

updates its cartridge inventory.

The average cartridge inventory time for 7 cartridges is approximately:



35 seconds when the autoloader contains seven cartridges with bar code 

labels.



130 seconds when the autoloader contains seven cartridges without bar 

code labels.

Whenever a cartridge is inserted or removed through the cartridge access port, 

the autoloader performs a cartridge inventory on the affected cell.

The average time for an individual cartridge cell inventory is:



5 seconds when the cartridge has a bar code label.



20 seconds when the cartridge does not have a bar code label.

Move complete time is the time it takes the autoloader to remove a cartridge 

from the tape drive, return it to its cell, position a different cell in front of the 

tape drive, and load the new cartridge into the tape drive.

Move complete time is measured from the time the autoloader receives the 

move command to the time the autoloader returns status to the initiator 

indicating that the move is complete. The average move complete time is 

approximately 26 seconds.

The mean cycles between failures (MCBF) for the autoloader is 250,000 cycles. 

This value does not include failures attributable to the tape drive or cartridges.

During one full cycle, the autoloader completes the following actions:



Picks a cartridge from the tape drive



Places the cartridge in its cell



Positions a different cell in front of the tape drive



Loads the new cartridge into the tape drive