HSG80 Enterprise/Modular Storage RAID Array Fibre Channel Solution Software V8.7A for Windows Release Notes (AA-RH0QL-TE, July 2003)

Avoiding Problem Situations
47Release Notes – HSG80 Enterprise/Modular Storage RAID Array Fibre Channel Solution
Software Version 8.7A for Windows
Avoiding Problem Situations
Under certain conditions, you may experience unusual array controller behavior. This
section presents information to help you avoid such situations and to recover from
them if they occur.
Adding, Moving, and Changing Devices
The array controller maintains a configuration map of device types and locations. This
map is used to communicate with devices. If you add, move, or change a device while
the array controller is powered off without first changing the array controller
configuration, the array controller is not able to communicate with the changed device
when it returns to service.
If a device is removed by mistake while the array controller is off, delete all containers
associated with the removed device after power was restored to the array controller.
If a device is replaced while the array controller is off, install the replacement device
before restoring power to the array controller. Once power is restored, use the
DELETE DISK CLI command to remove the disk from the configuration. Then use the
ADD DISK CLI command to add the new device. This correctly removes the failed
device and adds the new device after restoring power to the array controller.
See the HSG80 Array Controller ACS Version 8.7 CLI Reference Guide for details on
CLI command usage and syntax.
See the HSG80 Array Controller ACS Version 8.7 Maintenance and Service Guide for
correct device removal and addition procedures.
Moving Storagesets
Move only normal storagesets. Do not move storagesets that are reconstructing or
were reduced.
CAUTION: Ensure all storagesets are in normal mode prior to moving them, or data
corruption occurs.