beautypg.com

HP Hitachi Dynamic Link Manager Software User Manual

Page 122

background image

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.