StorageTek Host Software Component 6 Manuel D’Utilisation

1st ed., 6/30/04 - 312579601

If the HSC network recovery times out, the ACS is automatically changed to an offline 
state and all outstanding LMU requests are purged. After troubleshooting the network 
connection, vary the ACS online.

Note: During network recovery, the ACS can be forced offline, however, all 
outstanding LMU requests are purged. StorageTek recommends that users allow the 
HSC network recovery process to remain active and not to force the ACS offline.

If network recovery times out on the master LMU, and the HSC is still connected to the 
standby LMU, the ACS is still considered in an online state. Issue the SWitch command to 
make the current standby LMU the new master LMU.

The HSC redrives requests to the new master LMU.

If network recovery times out on the standby LMU, resolve the network problem and IPL 
the standby LMU. After the IPL is complete, the master LMU notifies the HSC that the 
standby LMU is now ready and network connectivity is reestablished with the standby.

If network recovery times out on both LMUs, the ACS is automatically changed to an 
offline state and all outstanding LMU requests are purged. After the network problems are 
resolved, vary the ACS online.

Note: When network recovery is active on the master and standby LMUs, the ACS 
can be forced offline, however, all outstanding LMU requests are purged.  
StorageTek recommends that users allow the HSC network recovery process to 
remain active and not to force the ACS offline.