Installing the A6829A Adapter
Installing the A6829A Adapter
The PCI specification allows a single physical adapter to contain more than one channel. A single channel SCSI adapter cannot be replaced by a dual channel adapter, even if the additional channel(s) on the adapter are identical to the original SCSI adapter.
When the replacement adapter is added to the system, the appropriate driver for that adapter must be configured in the kernel before beginning the replacement operation. SAM ensures the correct driver is present. (In most cases, the replacement adapter will be of the same type as an adapter 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), you can load it manually. See the section “Dynamically Loadable Kernel Modules” in Configuring
•If the driver is static and not configured in the kernel, then the adapter cannot be added online. The adapter could be physically inserted online, but no driver will claim it. Note that the SCSI c8xx driver is a static driver.
If you have any question about the driver’s presence, or if you are not certain that the replacement adapter is identical to the existing adapter, you can use the ioscan command together with the rad command to investigate.
SAM does not allow the A6829A adapter to be suspended in either of the following situations:
•If the adapter is being used (for example, if a file system is mounted).
•If the CRA shows that a critical resource (for example, swap space or the root file system) depends on the adapter.
After you replace an A6829A adapter online, SAM checks the replacement adapter to make sure it is permitted, according to the
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