Spectra 20K/64K Library AIT-4 Drive Upgrade
7
Sony AIT Tape Drive Specifications
The following table summarizes the specifications for Sony AIT drives.
LED Information
The following table summarizes the information carried by the drive’s LEDs:
Parameter
AIT-1
AIT-2
AIT-3
AIT-4
Ambient operating temperature
a
a.
This applies to the drives; the limits for the library are given in the library user guide.
+41°F to +104°F
(+5°C to +40°C)
Storage temperature
-40°F to +158°F
(-40°C to +70°C)
Operating humidity
20% to 80% non-condensing
MTBF
200,000 hours @
100% duty cycle
300,000 hours @
100% duty cycle
400,000 hours @
100% duty cycle
400,000 hours @
100% duty cycle
Average file access time
< 55 seconds
< 27 seconds
< 27 seconds
< 52 seconds
Uncorrectable error rate
Less than 1 x 10
-17
bits
Sustained transfer rate
b, c
b.
This is a per-drive value. Total sustained transfer rate for the library depends on the number of drives installed in the library.
c.
The sustained transfer rate can increase by an average of 2.6 times with compression, dependent on the type of data.
3 MB/sec native
6 MB/sec native
12 MB/sec native
24 MB/sec native
Burst transfer rate
(synchronous maximum)
d
d.
The actual burst transfer rate is limited by the performance of the SCSI HBA, the controller, and the buffer control hardware.
40 MB/sec
40 MB/sec
160 MB/sec
160 MB/sec
Type of Blink
LED Type
Tape Motion
Cleaning Request
Replace Tape
Off
a
a. Off: no color in the LED
No Tape
Cleaning is not necessary
No media error occurred
On
b
b. On: Blue and not blinking
Tape Loaded
Cleaning request
Media error occurred
Slow Flash
c
c. Slow flash: flashes blue for 3-1/2 seconds and off for 1/2 second
Tape access in progress (read/
write)
Cleaning is not completed
N/A
Fast Flash
d
d. Fast flash: flashes blue for 1/4 second and off for 1/4 second
Tape access in progress (other)
N/A
N/A
All Flash
e
e. All LEDs flashing: all flash blue for 1/4 second and off for 1 second
Hardware error occurred
