VLS9200 user guide (BW402-10009, August 2012)

A Troubleshooting
This appendix lists iLO troubleshooting features, and also describes some common issues you may
encounter while configuring or using the VLS including automigration/replication and deduplication
issues.
Using iLO
The VLS supports many of the features of iLO 3 Standard (non-licensed). If you are troubleshooting
the VLS, especially if the system is down, you may find these features helpful:
• Power on the VLS.
• Power off the VLS. (Under normal conditions, you should use Command View VLS to power
off the system.)
• Determine if the master node is powered on or off.
• Turn on or off the UID LED.
• Check the “Integrated Management Log” to see past node hardware failures.
• Check the hardware health and basic hardware configuration if the VLS is down or you have
reason to suspect the reporting is incorrect.
• Check the master node's Serial Number, Product ID, BIOS firmware version, and iLO firmware
version.
There are many other useful iLO features; see your iLO user guide for details.
VLS Common Issues
SolutionPossible causesSymptom
Increase the maximum number of LUNs
per device the operating system is
There are more LUNs on the FC host
ports than the operating system is
Some of the virtual devices are not
detected by the operating system
configured to see. To change the
maximum LUN per device setting:
configured to see. Once the maximum
number of LUNs on a device is
detected, the operating system stops
when it scans the SAN for new
hardware.
• For Microsoft Windows—See
http://support.microsoft.com/
looking for more LUNs. In the case of
the VLS, the operating system
default.aspx?
scid=kb%3ben-us%3b310072.
considers each FC host port to be one
device. So, if the maximum number of
• For HP-UX—The value can only be
changed for HP-UX versions 11.31
LUNs an operating system is
configured to see is eight, the
and later. Increase the number of
operating system will only see LUN0,
LUNs per bus on the HP-UX server
LUN1, ..., LUN7 and will not see
by entering # scsimgr set_attr
LUN8, LUN9, ..., and up on each FC
-a max_lunid=32. You can view
host port. By default Windows and
the connected IO by entering #
ioscan -m lun.
You cannot create legacy DSFs for
LUN IDs above 7; use persistent
device special files instead.
HP-UX hosts can see a maximum of 8
LUNs per FC host port.
See the HP-UX documentation for
more information.
• For other operating systems—See
the operating system web site.
Use the VLS's LUN masking feature to
restrict the number of virtual devices the
host sees on the VLS FC host ports, so
it only sees the virtual devices it needs
to see. Then, use the VLS's LUN
mapping feature to assign LUNs to the
222 Troubleshooting