HP manual Installing HyperFabric Adapters

Installing HyperFabric

Installing HyperFabric Adapters

Online Replacement (OLR) When replacing an interface card online, the replacement card must be identical to the card being replaced (or at least be able to operate using the same driver as the replaced card). This is referred to as like-for-likereplacement and should be adhered to, because using a similar but not identical card can cause unpredictable results. For example, a newer version of the target card that is identical to the older card in terms of hardware might contain an updated firmware version that could potentially conflict with the current driver. An A6386A adapter must be replaced with another A6386A adapter, etc. Also, the old adapter and new adapter must have the same revision levels.

When a replacement card is added to an HP 9000 system, the appropriate driver for that card must be configured in the kernel before beginning the replacement operation. SAM ensures the correct driver is present. (In most cases, the replacement card will be the same type as a card already in the system, and this requirement will be automatically met.) Keep the following things in mind:

•If the necessary driver is not present and the driver is a dynamically loadable kernel module (DLKM), it can be loaded manually. See the “Dynamically Loadable Kernel Modules” section in “Configuring HP-UX For Peripherals” for more information.

•If the driver is static and not configured in the kernel, then the card cannot be added online. The card could be physically inserted online, but no driver would claim it.

If there is any question about the driver’s presence, or if it is uncertain that the replacement card is identical to the existing card, ioscan can be used together with rad to investigate.

If more than one operational HyperFabric adapter is present when SAM requests the suspend operation for all ports on the target adapter, HyperFabric will redirect the target adapter’s traffic to a local backup adapter using local failover. Client applications using the replaced adapter will not be interrupted in any way.

If the adapter being replacing is active and it is the only operational HyperFabric adapter on the HP 9000 system, SAM displays the following warning message:

WARNING: You have 1 operational HyperFabric card. If you go ahead with this operation you will lose network access via HyperFabric until the on-line replaced HyperFabric card becomes operational.

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