Ibm 3995 Optical Library C-Models - IBM i series Handbook

of a failure on the primary disk drive. The Dual Gripper option (#5215) provides the accessor
with a second tape cartridge gripper for better performance in the Library.

IBM 3995 Optical Library C-Models

3 9 9 5 O p tic a l L ib r a ry M o d e ls C 4 0 , C 4 2 , C 4 6 , a n d C 4 8
• Magneto-Optical (MO) rewritable, which allows data on the cartridge
• Permanent Write-Once-Read-Many (WORM), which provides a permanent and
unalterable copy of the data by physically ablating (burning) holes into the recording
layer
• Continuous Composite Worm (CCW), which provides an unalterable copy of data
through a software implementation of WORM, using rewritable media
Rewritable, permanent (ablative) WORM and CCW optical cartridges can be mixed within the
same library.
The 5.2G (8X) optical drives in the C models can read and write to 5.2G (8X) and 2.6G (4X)
optical cartridges and read only 1.3G (2X) and 650M (1X) optical cartridges. The 2.6G (4X)
optical drives in the C models can read and write to 2.6G (4X) and 1.3G (2X) optical
cartridges and read only 650M (1X) optical cartridges.
Each library has an auto changer, which is used to move the optical cartridges between the
optical drives, the cartridge storage cells, and the entry/exit slot located on the top of the
libraries. Certain models feature a dual-gripper cartridge picker on this auto changer for
improved performance. All models have a viewing window through which the auto changer
can be seen.
The following table summarizes the 3995 C-Models supported on the iSeries or AS/400e
server.
Externally Attached Automated Libraries
The IBM 3995 Optical Library
C-Models feature high capacity
5.2G or Extended Multifunction
optical drives, known as 8X
technology. It is eight times the
capacity of the first generation
optical technology.
The drives use industry
standard 5.25-inch optical
cartridges, supporting these
optical technologies:
Externally Attached Automated Libraries
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