Installation
9
Drive performance specifications
The following table lists the performance specifications for the Viper 200 drive.
Specification
Value
Capacity
Ultrium type A (609 m)
Ultrium type B (319 m)
Ultrium type C (203 m)
Ultrium type D (87 m)
100 Gbytes (native)
50 Gbytes (native)
30 Gbytes (native)
10 Gbytes (native)
Recording density
3,660 RLL-encoded ONEs per mm
Flux density
3,660 flux transitions per mm
Track density
3 tracks per mm
Error recovery
Read-after-write
Reed Solomon ECC (2 levels)
Recording unrecoverable errors
< 1 in 10
17
data bits
Recording undetectable errors
< 1 in 10
27
data bits
Tape drive type
LTO (Ultrium)
Head configuration
16 thin-film write heads
16 MR read heads
8 MR servo heads
During operation 8 write heads, 8 read
heads and 2 servo heads are active at the
same time.
Recording format
Ultrium 8-channel (U-18)
Recording method
(1,7) RLL
Transfer rate (sustained)
16.137 Mbytes/second (max, native)
Synchronous transfer rate (burst)
80 Mbytes per sec max
Asynchronous transfer rate (burst)
40 Mbytes per sec max
Cartridge load and tape thread
<10 seconds
Cartridge unload
3 seconds
Average rewind time (609-m tape)
< 76 seconds
Maximum rewind time (609-m tape)
152 seconds
Average data access time (609-m tape)
< 76 sec
Maximum data access time (609-m tape)
152 sec
Average rewind time (609-m tape)
< 76 sec
Maximum rewind time (609-m tape)
152 sec
Tape speed
up to 4 meters per second
