Hitachi Dynamic Link Manager Software Users Guide for Linux
Functional Differences Between Version 6.1 and Versions
Earlier Than 6.1
In a new installation of HDLM, the default load balancing algorithm has been
changed from the Round Robin algorithm to the Extended Least I/Os
algorithm.
Functional Differences Between Version 6.0 or Later and
Versions Earlier Than 6.0
• The description of the HDLM version displayed as a result of executing
HDLM commands or utilities has been changed.
• In versions earlier than 6.0, the messages KAPL09210-I, KAPL09211-I,
and KAPL09212-E will not be output when you install HDLM. In versions
6.0 or later, one of the above messages will be output when you install
HDLM.
• In a new installation of HDLM, the default value for the automatic failback
function has been changed from off to on.
Functional Differences Between Version 5.9.4 or Later and
Versions Earlier Than 5.9.4
• The maximum number of LUs for one port for one storage that was
guaranteed in HDLM for each storage system is now guaranteed for each
OS.
• The maximum number of LUs guaranteed in HDLM has been changed to
512. Therefore, the naming rules for HDLM logical device files have also
been changed.
• The maximum size of a log file that is obtained during execution of the
HDLM-configuration definition utility (dlmcfgmgr) can now be specified by
using the dlmcfgmgr utility.
Functional Differences Between Version 5.9.1 or Later and
Versions Earlier Than 5.9.1
• In versions earlier than 5.9.1, the timeout value of SCSI INQUIRY is fixed.
Therefore, depending on the connected storage system, a timeout occurs
when the response for SCSI INQUIRY is delayed.
In versions 5.9.1 or later, you can use the dlmsetopt utility to customize
the timeout value according to the storage system in use.
• In versions earlier than 5.9.1, the message below will not be output when
you install HDLM. In versions 5.9.1 or later, the following message will be
output when you install HDLM.
¢
Preparing packages for installation...
C-4
Functional Differences Between Versions of HDLM
Hitachi Dynamic Link Manager (for Linux®) User Guide