Exabyte 221L, Руководство по эксплуатации продукта

Страница: 186 / 208

170
P
RODUCT
M
ANUAL
1014258
A
PPENDIX
A—L
IBRARY
S
PECIFICATIONS
S
IZE AND
W
EIGHT
The library’s dimensions and weight are listed in Table A-2 .
P
ERFORMANCE
S
PECIFICATIONS
This section describes the following performance specifications for the library:
Data transfer rate
Tape drive performance
Self-test times
Cartridge inventory times
Move complete time
Robot reliability
D
ATA
T
RANSFER
R
ATE
The data transfer rate for the library depends on the model and number of
tape drives installed, as show in Table A-3 .
Note: Compression, capacity, and throughput will vary dependent upon type of
data and system configuration.
T
APE
D
RIVE
P
ERFORMANCE
When installed in the library, the tape drives perform within their
specifications. For more information about tape drive performance
specifications, refer to the LTO Ultrium tape drive documentation available
from IBM Corporation.
Table A-2 Dimensions and weight
Length 61.21 cm (24.10 inches)
Width 43.82 cm (17.25 inches)
Depth 21.97 cm (8.65 inches)
Weight 34.2 kilograms (75.5 pounds) with two tape drives, two cartridge
magazines, and no cartridges installed
Table A-3 LTO Ultrium library transfer rate
Tape Drive Maximum Data Transfer Rate (Two Tape Drives)
LTO Ultrium 1 30 MB per second (native), 216 GB per hour (compressed
a
)
a
Assuming a 2:1compression ratio.
LTO Ultrium 2 70 MB per second (native), 504 GB per hour (compressed
a
)
LTO Ultrium 3
b
b
Ultra160 SCSI bus. All sustained data rates are dependent on the capabilities of the SCSI bus (for example,
an Ultra2 SCSI bus is limited to less than 40 MB/second).
160 MB per second (native), 1.1 TB per hour (compressed
a
)