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4 Known Problems and Limitations
This section provides a list of problems and limitations known to HP when these release notes
were published. If workarounds are available, they are included.
4.1 For All Smart Array Controllers
•
Unnecessary reboot occurs when removing the ciss driver.
If you use the swremove command to remove the dynamically loaded ciss driver, the
Critical Resource Analysis (CRA) can fail. This causes swremove to incorrectly reboot the
system.
Severity: Low
Corrective Action: To avoid this CRA failure, before running swremove install patch
PHCO_36356 (or a superseding patch). Patches are available from the HP IT Resource Center
at:
http://itrc.hp.com/
Under “Maintenance and Support,” click the Patch Database link, then search for the patch
number. For more information on how to manage and install patches, see the Patch
Management User Guide for HP-UX 11.x Systems at:
http://docs.hp.com/en/oshpux11iv3.html
NOTE:
If you remove the dynamically loaded ciss driver while it is in use, or if you remove
the statically loaded ciss driver at any time, you must perform a reboot. This is normal
behavior under these conditions, and is not affected by patch PHCO_36356.
•
Automatic hot-plug is not detected.
The HP Smart Array Controllers do not automatically detect the hot-plug of internal disks.
Corrective Action: After replacing a physical disk, run the sautil command with the scan
option.
4.2 For Parallel SCSI Smart Array Controllers
•
Partially disconnected disks and external cables are not properly detected by ioscan.
If you remove all but one cable connecting external storage enclosures, or if you remove
physical disks that are part of a logical drive from the enclosures, saconfig and sautil
show the status of the logical drive as FAILED. However, ioscan reports the status of the
disks incorrectly.
Corrective Action: Reconnect the cables or reinsert the disks, then reset the Smart Array
controller using the sautil reset_ctlr command. After the controller is reset, ioscan
correctly reports the status of the disks as CLAIMED.
•
Disconnected external storage enclosures are not properly detected by ioscan.
If you disconnect all cables connecting a Smart Array controller to external storage enclosures,
saconfig and sautil show the status of the logical drives as FAILED. However, ioscan
continues to report the status of the disks as CLAIMED.
Corrective Action: Reset the Smart Array controller using the sautil reset_ctlr
command. When the controller is reset, ioscan correctly reports the status of the disks as
NO_HW.
•
Controller fails when two connectors are used on the same channel.
Each channel has two connectors (one internal and one external), but only one connector
can be used per channel at any given time. If you attempt to boot the system with storage
4 Known Problems and Limitations
5
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