SAS subsystem service considerations
There are several considerations to review before servicing features within the SAS subsystem for the 5148-21L, 5148-22L, 8247-21L, 8247-22L, 8247-42L, 8284-21A, 8284-22A, 8286-41A, or 8286-42A system.
Before servicing any features, review the I/O configurations for
each logical partition on your system. It is important to understand
the differences between the various configurations and the resulting
service considerations. In addition, consider possible impacts to
the following areas:
- Logical partitions and their I/O adapter assignments
- RAID array configurations
- Physical disk locations
- Path to your boot device
