HP Surestore Disk Array 12h - And FC60 Advanced User's Manual page 118

Table 10
High Availability Topology Error Recovery
Failing Continue
component after failure
Disk module Yes
Controller No on path to
modules failed controller
module;
Yes on
alternate path
through second
controller
module
Fan module Yes
Power supply Yes
modules
HP Fibre No on path to
Channel-AL failed hub;
Hub Yes on
alternate path
to other hub
Fibre No on path to
Channel I/O failed adapter;
adapter Yes if array has
dual controller
modules and
alternate paths
have been
configured
Topologies for HP-UX
118
What happens and how to recover
Applications continue to run on all supported RAID levels (RAID-1,
0/1, and 5). The system administrator or service provider hot-
swaps the failed disk module.
Ownership of the failed controller module's LUNs can transfer
automatically to the remaining operational controller module if
primary and alternate paths have been configured in LVM. If so,
LVM switches automatically and transparently to the alternate path.
The system administrator or service provider hot-swaps the failed
controller module.
Applications continue to run. The system administrator or service
provider hot-swaps the fan module.
Availability are present, applications continue to run when one
power supply module fails. The system administrator or service
provider hot-swaps the failed power supply module.
I/O operations fail along the path to the failed HP Fibre Channel-AL
Hub. I/O operations can transfer automatically to the other HP
Fibre Channel-AL Hub if primary and alternate paths have been
configured in LVM. If so, LVM switches automatically and
transparently to the alternate path. The authorized service provider
hot-swaps the failed HP Fibre Channel-AL Hub.
I/O operations fail along the path through the failed adapter. If the
host has two Fibre Channel adapters connected to a dual-controller
module disk array, the array can be accessed through the path to
the operational adapter and controller module if primary and
alternate paths have been configured in LVM. If so, LVM switches
automatically and transparently to the alternate path. The
authorized service provider replaces the failed adapter and the
system administrator restarts the operating system and
applications.