IBM System Storage TS3310, Maintenance Information

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v v Controls the import/export station using the I2C interface with the LCB1. Then
the LCB1 registers output to control the on-board buzzer that provides audio
feedback for the library operator.
v v
The DIEB as well as the LCB1 provide critical environmental monitoring.
v v Sends voltage information to the LCB1 using the I2C interface. This interface
also reads the card's version to identify existing hardware and firmware version.
Then if hardware changes, the firmware can be updated too.
v v
Power conversion hardware on DIEB converts the +48 VDC input voltage to
the required voltage levels of components on this board.
v v The front panel power switch interfaces with the control module's Backplane
Connect Board (BCB1), providing power for enable/disable commands.
Drive Sled Interconnect Board (DSIB)
The Drive Sled Interconnect Board (DSIB) functions as an interconnect board
between drive sleds and the library for power and drive communications. A DSIB
board is required in all modules, regardless of whether the module contains drive
sleds. The Predator library only supports full-height drive slots, such as LTO
drives.
Here are some considerations regarding the DSIB:
v v Connects with the LCB1 in receiving tape drive commands and routing status
and error messages, with signals being routed through the BCB1 (control
module) or BCB2/BCB3 (expansion module).
v v Drive input power is supplied from the module power supply and current is
limited on the DSIB.
v v
There are two versions of DSIB boards:
– o DSIB1 supports 2 drive sleds and is utilized in the 5U CM.
– o DSIB2 supports 4 drive sleds and is utilized in the 9U EM.
– o For a 14U library with 6 drive sleds, both DSIB1 and DSIB2 boards are
required.
Control Module Electrical System
Appendix C. Library Diagrams
C-5