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Configuring Library Partitions

34 StreamLine™ SL8500 Modular Library System User's Guide • March 2007

Revision K • 96154

PTP Addressing Scheme

The following terms and definitions apply to PTP operations:

Home Library: For two libraries connected by PTPs, the home library is the library 

supplying power and signals to the PTP through the left side of the Drive and 

Electronics Module, as viewed from the front of both libraries. 

Away Library: For two libraries connected by PTPs, the away library is the library on 

the left side of the home library as viewed from the front of both libraries.

The PTP addressing scheme is the same five-digit value as the other SL8500 devices and 

locations (see 

PTP numbering for the home library is:

■

Library number

■

Rail number (1-4 [internal firmware] or 0-3 [host])

■

-6 (Column number)

■

1 (Side number)

■

0 (Row number)

PTP numbering for the away library would be:

■

Library number

■

Rail (LSM) number (1-4 [hardware] or 0-3 [host])

■

+6 (Column number)

■

1 (Side number)

■

0 (Row number)

Columns +6 and -6 are the PTP areas for a library. Column +6 in a library 

firmware address refers to libraries connected to the right, -6 indicates libraries 

connected to the left. 

elevators are Panel 0. The first library installed in the complex is 1 and each additional 

library added to the complex increments by 1. 

Home and away designations are always referenced from a PTP perspective of the 

library it is connected to. When more than two libraries are connected in a complex, 

every library that has two neighbors is both a home and away library, depending on the 

perspective of the PTP devices. For example, the middle library in a set of three is the 

home library for the PTP's on its left and the away library for the PTPs on its right. 

Configuring Library Partitions

Library partitioning is a licensed feature which must be enabled by your Sun 

service representative. This feature is available starting with SL8500 firmware version 

3.7x and StreamLine Library Console version 3.25. See 

 for complete details.