HP A3550A - High Availability Disk Arrays Model 20 Storage Enclosure User Manual page 104

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Failing Continue after
component failure?
Disk module Yes
SP Yes
Fan failure Yes
within fan pack
Power supply Yes
SCSI-2 adapter/ No*
cable
What happens and how to recover
Provides the same features as the basic configuration
but with better performance and higher availability.
Applications continue running. System Administrator or
service provider replaces module.
With HP-UX 10.x, if one SP fails, ownership of the failed
SP's LUNs can transfer automatically to the remaining
operational SP. If a primary and an alternate path have
been configured in LVM, LVM can switch automatically
to the alternate path (LVM applies to HP-UX 10.x and
later). These operations are transparent to the user.
Applications continue running. System Administrator or
service provider replaces module.
If a redundant power supply module is present,
applications continue running; otherwise, the disk array
fails. Service provider replaces power supply and
System Administrator restarts the operating system, if
necessary.
If the adapter/cable fails, I/O operations to array disk
units fail. Authorized service provider replaces adapter
or cable and System Administrator restarts operating
system and applications.
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