Exabyte 221L, Product Manual

Page: 187 / 208

A
UGUST
2005 E
XABYTE
221L
AND
221L-FC L
IBRARIES 171
P
ERFORMANCE
S
PECIFICATIONS
S
ELF
-T
EST
T
IMES
Power-on Self-Test Time Each time the library is powered on, it performs a
power-on self-test (POST). During POST, the library:
Loads firmware code into RAM
Powers on the tape drive(s)
Verifies the SCSI IDs (221L)
Sets Loop IDs and obtains world wide names (221L-FC)
Engages the solenoid latch on the door
Moves the robot to the home position
Performs a complete cartridge inventory
If the cartridges are properly installed, the library is ready for operation. If any
cartridge is not properly installed, the library reports an error and the robot
returns to the home position.
The POST time is measured from the time the library is powered on until the
library indicates Ready status. The time required for POST is 57 seconds. If the
POST Bar Code Scan option is enabled (see page 46 ), the library scans all of the
bar code labels. Using this option increases the time for POST by 27 seconds.
Self-Test Time Once the library is powered on, it performs a self-test each
time the door is opened and closed. During a self-test, the library:
Engages the solenoid latch on the door
Moves the robot to the home position
Performs a complete cartridge inventory
If the cartridges are properly installed, the library is ready for operation. If any
cartridge is not properly installed, the library reports an error and the robot
returns to the home position.
The time for this self-test is measured from the time the door is closed and
locked until the library indicates Ready status. The time required for a self-test
is 31 seconds. If the POST Bar Code Scan option is enabled (see page 46 ), the
library scans all of the bar code labels. Using this option increases the time for
the self-test by 27 seconds.
C
ARTRIDGE
I
NVENTORY
T
IMES
A library application can issue a command to the library to check all storage
locations for cartridges. Storage locations include the magazine slots and the
fixed cartridge slots. After checking the storage locations, the library updates
its cartridge inventory.
If the library scans the bar code labels on the cartridges, the average cartridge
inventory time is 46 seconds. If the library does not scan bar code labels, the
average cartridge inventory time is 23 seconds.