Externally Attached Automated Libraries 375
Externally Attached Automated Libraries
Customers can tailor the library to match their system capacity and performance needs from
14 TB to 248.1 TB (28 TB to 496.2 TB with 2:1 compression), using up to 72 IBM LTO Ultrium
tape drives. A single AS/400 can address up to 32 tape devices per library.
The highlights include:
• Multi-path architecture
The patented Multi-path architecture, first introduced by IBM in 1998, supports sharing by
homogeneous and heterogeneous open systems servers. The 3584 can be partitioned
into two to seventy-two logical libraries.
• Scalable capacity
The library frame and robotics is based on field-proven IBM Tape Library technology, with
scalability from one to six frames, providing a broad range of drive and storage capacities
allowing high granularity in library configurations.
• Designed for automated tape handling
The IBM 3584 UltraScalable Tape Library is part of a new family of tape library storage
solutions designed for the large, unattended storage requirements from today’s mid-range
systems up to high-end network servers. Each aspect of the subsystem is designed to
optimize access to data and reliability. IBM LTO Ultrium tape drives are compact storage
devices that support the highly intensive read and write operations required by today’s
network servers.
• High performance
Cartridge move time within the 3584 UltraScalable Tape Library is typically less than 3.0
seconds. A dual-gripper accessor can retrieve the next cartridge to be mounted, unload
the current cartridge, and load the next cartridge. This enables these benefits:
– Saves complete the move operations
– Overall library performance is improved
– Higher reliability
– Increased redundancy
The average drive search time to first byte of data is 60 seconds.
• Supports tape pooling up to 32 devices per pool
• Supports multi-host attach (1 to 72 hosts, minimum one drive per host and one
cartridge slot)
• Supports partitioning
• Supports Fiber Channel Attach
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