HP Hitachi Dynamic Link Manager Software - Manual (Page 495)

B. Differences Between HDLM Version 5.9 or Later and Version 5.8.1 or Earlier
473
• Settings when GPFS is used
• Replacement of HBA
• Changing HDLM management-target devices
• Replacement of fiber cables
• Replacement of fibre channel switches
#
An update installation refers to upgrading HDLM whose version is 5.9 or
later. Therefore, it does not include a migration from HDLM version 5.8.1 or
earlier to HDLM version 5.9 or later. It also does not include a migration
from HDLM version 5.9 or later to HDLM version 5.8.1 or earlier. For such
installations, you must first uninstall the existing HDLM and then install
HDLM version 5.9 or later. To migrate from HDLM version 5.8.1 or earlier
to HDLM version 5.9 or later, you can use the
dlmmigsts
utility for
assisting HDLM transitions to inherit the existing HDLM settings. For
details, see 3.5.6 Migrating from HDLM Version 5.8.1 or Earlier to Version
5.9 or Later.
B.4 Migrating Reservation Control Settings
In HDLM version 5.8.1 or earlier, the reservation control setting is called the
reservation level and is specified by using the
set
operation with the
-rsv on
parameter. The target of the reservation level was every LU in an HDLM
management-target device. However, you can set the reservation policy specification
on each LU if the AIX version is AIX 5L V5.2 or later. The reservation control setting
is specified by using the
chdev
command in HDLM version 5.9 or later. Therefore,
the
-rsv on
parameter for the
set
operation is no longer provided.
Table B-2: The correspondence of the setting values between the reservation level
and reservation policy shows the correspondence of the setting values between the
reservation level and the reservation policy.
Table B-2: The correspondence of the setting values between the reservation
level and reservation policy
B.5 Support for a Boot Disk Environment
A storage system disk can now be used for the boot disk. Accompanying this, the
dlmpreuninst
utility that is executed before uninstalling HDLM has been provided.
Reservation Level Reservation Policy
0
: Ignoring the reservation
no_reserve
2
: Persistent reservation
PR_exclusive