Technical data

Online Add and Replacement (OLAR) of PCI Cards
Requirements for OLAR Operations
HP System Partitions Guide: Administration for nPartitions, rev 5.1 375
• The card must fit into the slot.
On all nPartition servers, all PCI card slots can accept PCI cards
keyed as universal cards.
However, in nPartition server I/O chassis the PCI card slots also are
physically keyed to accept cards that either are keyed as 5-volt cards
or keyed as 3.3-volt cards.
See the chapter nPartition System Overviews on page 31 for details
on I/O slot capabilities.
• The resources supported by the card must not be critical for the
server’s continued operation.
Resources that do not have a defined failover are considered to be
“critical resources” that cannot be replaced online.
For example, the following cards may be considered critical
resources: cards that connect to disks for active filesystems, or a LAN
card that provides the network port used by the current instance of
SAM.
You could replace a SCSI card used by a disk with an active
filesystem, if the filesystem were mirrored on a different disk
supported by a second SCSI card. In this case LVM could
automatically failover to the mirrored disk, thus allowing you to
perform an online replacement of the original SCSI card.
NOTE The core I/O cards on HP nPartition servers are not supported for online
addition or replacement (OLAR) operations.