Asset ID:	1-71-1013624.1
Update Date:	2012-07-30
Keywords:

---

Solution Type  Technical Instruction Sure

Solution  1013624.1 :   SL8500 - HBT Card Function in Library  


PreviouslyPublishedAs
219199

Applies to:

Sun StorageTek SL8500 Modular Library System
All Platforms
Checked for relevance on 6-Nov-2011

Goal

SL8500 - HBT Card Function in Library

Solution

Description
The HBT card is the tape drive controller, responsible for translating commands from the library controller (HBC card) into unique drive commands that are transferred across differential RS-422 cables to the tape drives (the TTI interface).

- Provides TTI interface to/from the tape drives (RS-422).
- Contains 66 Universal Asynch Receiver/Transmitters (UARTs).
- 64 perform parallel-to-serial conversion for the drives.
- Communicates with the tape environmental monitor cards (HBD).



Attachments

This solution has no attachment