APPENDIX A—SPECIFICATIONS

PERFORMANCE SPECIFICATIONS

This section describes the performance specifications for the autoloader.

DATA TRANSFER RATE

The data transfer rate for the autoloader depends on the model of tape drive installed, as shown in Table A-3.

Table A-3LTO Ultrium tape drive transfer rate and capacity

Tape Drive

Maximum Data Transfer Rate

 

 

LTO Ultrium 2

26.6 MB per second (native), 187.2 GB per hour (compresseda)

LTO Ultrium 3b

80 MB per second (native), 576 GB per hour (compresseda)

LTO Ultrium 3c

60 MB per second (native), 432 GB per hour (compressed a)

aAssuming a 2:1 compression ratio. Actual compressed transfer rate varies depending on the type of data being recorded and the system configuration.

bWhen attached to an 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).

This data is for the IBM full height LTO Ultrium 3 tape drive. For additional information, see www.storage.ibm.com/tape/lto/oem/index.html.

cThis data is for the Hewlett Packard half height LTO Ultrium 3 tape drive. For additional information, see www1.hp.com/storage/tapestorage.html.

TAPE DRIVE PERFORMANCE

When installed in the autoloader, the tape drive performs within its specifications. For more information about tape drive performance specifications, refer to the LTO Ultrium documentation available from:

Hewlett-Packard—www1.hp.com/storage/tapestorage/ultriumdrives.html

IBM—www.storage.ibm.com/tape/lto/oem/index.html

AUTOLOADER POWER-ON SEQUENCE TIME

Each time the autoloader is powered on, it performs a sequence of activities. During its power-on sequence, the autoloader:

Performs a power-on self-test (POST)

Runs self-diagnostics

Establishes communication with the tape drive

Verifies the SCSI IDs

Performs a cartridge inventory

The time required for the power-on sequence is measured from the time power is applied until the autoloader indicates ready status.

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PRODUCT MANUAL

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Exabyte 1X7 LTO manual 120, Performance Specifications, Data Transfer Rate, Tape Drive Performance