HP Hitachi Dynamic Link Manager Software - Manual (Page 122)

3. Creating an HDLM Environment
100
encapsulation while creating a disk group with an HDLM device or adding an
HDLM device to a disk group, the KAPL08019-E or KAPL08022-E message
might be output; however, this will not affect operations.
„ Make sure that the version of HDLM is the same for all nodes on a cluster.
„ HDLM and Sun StorageTek RAID Manager cannot be both present. Before
installing HDLM, uninstall Sun StorageTek RAID Manager. If either of the
following is applied, delete the
/devices/devices
link file by using the
following command, and then install HDLM:
• When uninstalling Sun StorageTek RAID Manager
• When Sun StorageTek RAID Manager was previously installed and the
/
devices/devices
link file remains
# rm /devices/devices
For details on the
/devices/devices
link file, refer to the bug report for Bug
ID 4673499 on the SUNSOLVE(TM) ONLINE website. You need a
SUNSOLVE(TM) ONLINE account to view the bug report.
„ For devices that can be managed by HDLM, you cannot use Sun StorageTek
Traffic Manager software (or, in Solaris 10, the Solaris multipathing software
MPxIO). If Sun StorageTek Traffic Manager software (or MPxIO) is needed for
devices that cannot be managed by HDLM, you will need to separate HBA ports
that recognize devices that can be managed by HDLM from those that cannot.
#
In
addition, for an HBA port that recognizes devices that can be managed by HDLM,
you will need to disable Sun StorageTek Traffic Manager software (or MPxIO).
#
You can use zoning of Fibre Channel switches or storage-system's WWN
security function to separately use HBA ports. You can also use
point-to-point connections to physically separate the HBA ports.
3.4.4 Notes on Command Execution
When HDLM is used, you cannot specify the
-r
option in the
drvconfig
,
devlinks
,
disks
, or
devfsadm
command to reconfigure the HDLM devices on
another boot disk. To reconfigure HDLM devices, you must boot them from the
applicable boot disk.
3.4.5 Notes on the Disk Label
Before changing a disk to be managed by HDLM to an HDLM-managed disk, make
sure that you execute the
format
command to add a VTOC label or EFI label to the
disk. If you attempt to use HDLM to manage a disk that does not have such a label, the
path will not come online.