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Drive and Electronics Module
96154 • Revision K Chapter 1 Introduction 7
LTO Ultrium
Ultrium Linear Tape-Open (LTO) technology was developed jointly by Hewlett-
Packard (HP), IBM, and Seagate to enable data interchange among different LTO
Ultrium tape drive vendors. LTO is an “open format” technology, which means that
users have multiple sources of product and media. The “open” nature of LTO
technology enables compatibility between the three different vendors.
The SL8500 supports the Ultrium Generation 2 and 3 LTO drives available
from HP, IBM, and Quantum. These drives use a single reel data cartridge with native
transfer rates and capacities of up to
■ 35MB/s with capacities of 200 GB for LTO2 drives
■ 80 MB/s with capacities of 300 GB for LTO3 drives
Super DLT
The Super DLT (SDLT) is a standard for mid-range UNIX and Windows platforms. The
SDLT 600 incorporates an advanced tape recording technology for high capacity tapes,
up to 300 GB, with transfer rates of 36 MB/s.
Electronics Control Module
Each library contains an electronics control module.
HBK Card
The HBK card contains flash memory and feature upgrade controls; it resides on a
separate logic card within the control module. It contains the configuration, firmware
versions, and features for the library.
Configuration
Library configuration is retained on the flash memory card. This saves significant time
in cases where an HBC card must be replaced, because the new card fetches the
configuration from flash memory instead of requiring manual re-configuration by a
service representative.
TABLE 1-3 LTO Drive Backward Readability
LTO Gen 2 Drive LTO Gen 3 Drive
LTO 1 media Read and write Read only
LTO 2 media Read and write Read and write
LTO 3 media No action Read and write