Installing the PTM12
CAUTION: Do not apply power to any library. Attempting to connect or disconnect a PTM to a
library that has power applied can damage the library and the PTM base unit PCB.
Determining the Type and Number of Extensions
The PTM base unit measures 10U. Use the following guidelines to add extensions.
NOTE: You cannot add two 5U slaves using a 10U extension kit due to 10-BaseT cable
requirements in the kit.
5U Model as the Master Unit
• If you are adding one 5U as a slave, no additional extensions are required.
• If you are adding one 10U as a slave, an additional 5U extension is required.
• Additional 5U slaves require the addition of a 5U extension kit for each unit after the first.
• Additional 10U slaves require the addition of a 10U extension kit for each unit after the first.
10U Model as the Master Unit
• Additional 5U slaves require the addition of a 5U extension kit for each unit.
• Additional 10U slaves require the addition of a 10U extension kit for each unit.
Positioning the Libraries
The PTM must be attached to the top two libraries in a multi-unit library configuration. Additional
slave libraries can be installed anywhere below the first two libraries, in any order.
NOTE: Additional libraries may be installed above the multi-unit library configuration.
The top library in the multi-library configuration (master) senses the position of each library during
initialization at power-up.
NOTE: All MSL Series libraries in a multi-unit library configuration must use the same drive types.
Check with your application software vendor to manage partitioning by tape technology if you
want to mix drive types in a multi-unit library configuration.
Mixed media is not supported on libraries with firmware levels of 4.04 or earlier.
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