PCI Hot Plug User's Guide 2.5.1

1.5.3 I/O Multipath with PCI Hot Plug

The Path Redundant capability of I/O Multipath can be utilized to maintain uninterrupted access to the media in case of a PCI card disconnection. An I/O device can be configured such that it can be accessed from two different PCI cards. Even if one of the PCI cards is disconnected, the I/O device remains accessible. However, I/O performance may be degraded because the number of redundant paths is reduced. Without I/O Multipath, all I/O devices on the PCI card must be deactivated before the PCI card is disconnected.

For more information regarding PCI Hot Plug and I/O device, please refer to "PCI Hot Plug User's Guide I/O Device edition".