D
Redundant Electronics Overview D-1
D
Redundant Electronics Overview
The optional redundant electronics (RE) feature provides failover protection for the
library controller. If the library controller or drive controller experiences errors,
operations will switch to the standby controller. The library controller and drive
controller installed on the same side of the card cage always switch as a pair.
RE allows an Oracle support representative to replace a faulty card while the library is
online and provides minimal disruption during firmware upgrades.
■ Redundant Electronics Requirements
■ Redundant Electronics Configuration Examples
■ What Occurs During a Failover
■ Factors that Prevent an RE Switch
■ Factors that Initiate and Automatic Failover
■ Ways to Initiate a Manual Failover
■ Firmware Upgrades with RE
See Also:
■ "Initiating a Manual RE Switch Using SLC" on page 16-7
Redundant Electronics Requirements
■ Two library controller cards (HBCR)
■ Two drive controller cards (HBT)
■ Minimum SL8500 firmware version FRS_6.00 and SLC version 4.65
■ Hardware activation file enabled using the CLI
Note: Any reference to HBCR also refers to HBC.
Note: To enable ADI mode, both cards must be high-memory HBTs.
If using media validation, Oracle recommends that both cards be
high-memory HBTs.
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