IBM Advanced SerialRAID Adapters SA33-3285-02 User Manual page 406

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4. When you have solved a problem, press the Cancel key to leave the display, then
"Using the Service Aids for SSA-Link Problem Determination" on page 400 provides
more examples of link problems and how to use this service aid to solve them.
386
User's Guide and Maintenance Information
Notes:
a. In the lists of physical disk drives (pdisks) that are displayed by the service aids,
you might see:
????? These question marks show where an SSA loop is broken. The service
aid cannot display which, if any, devices are missing from this
configuration.
***** These asterisks indicate an unconfigured device; that is, an SSA device
that is in the SSA network, but whose type is not known. Such a
condition can occur if the device has not been configured on the SSA
network, or it has not been configured into the using system. If you
have just switched on an SSA device or a disk drive enclosure
(subsystem), you might need to wait for up to 30 seconds before the
device is configured on the SSA network. If a new device has been
added to the SSA network, you must give the cfgmgr command to
configure that device into the using system.
For example:
This example shows that the SSA loop is broken between pdisk2 and pdisk3,
and that an unconfigured device is present between pdisk6 and pdisk0.
b. If you have just made changes to, or have just switched on, the unit in which the
disk drive is installed, you might need to wait for up to 30 seconds before
detailed information about the SSA network becomes available to the service
aids.
press Enter to reselect it. The display now shows the new status of the SSA links.