HP-UX 11i v3 March 2011 Release Notes (Edition 3)

Mass Storage Stack
The mass storage stack manages I/O devices, such as SCSI logical units (LUNs). In HP-UX 11i v3,
it delivers functionality designed to enhance server scalability, adaptability, and performance.
Summary of Change
Storage manageability has been enhanced so that default hardware path aliases are automatically
created. This functionality requires the HP-UX 11i v3 (11.31) GIO cumulative patch PHKL_41085,
which is delivered in the March 2011 OEUR. It is also available at the IT Resource Center (http://
itrc.hp.com/service/patch/patchDetail.do?patchid=PHKL_41085).
Defect fixes are also included in this release.
Impact
The hardware path name is currently represented as a long string of numbers and the delimiters
“/” and “.”. This name can get lengthy and is not easy to remember. By substituting an alias for
all or part of the hardware path name, the length of the name can be shortened and a user-friendly
name can be associated with pairs of nodes or individual nodes in the I/O tree, where each node
represents a mass storage object (controller, target path, lunpath, or lun). The hardware path alias
can be used as an identifier in commands including scsimgr, ioscan, insf, mksf, and rmsf.
This feature was initially released in the March 2010 HP-UX 11i v3 release and is enhanced to
set default hardware path aliases in this release.
Compatibility
There are no known compatibility issues.
Performance
There are no known performance issues.
Documentation
For an overview of the Next Generation Mass Storage Stack, see “The Next Generation Mass
Storage Stack” white paper, available at http://hp.com/go/hpux-core-docs (select HP-UX 11i
v3).
Two new white papers are also available at the same website. "Hardware Path Aliasing in the
Mass Storage Stack" explains how to use hardware path aliases to simplify storage manageability.
“The Effect of Device Replacement on Agile Device Files" explains how online device replacements
affect agile device files.
For information on new or modified commands, see their associated manpages. In particular, the
scsimgr(1M) manpage describes the changes to scsimgr.
For information on defect fixes, see the patch documentation for the following patches:
• PHCO_41441 11.31 scsimgr cumulative patch
• PHKL_41442 11.31 esctl cumulative patch
Obsolescence
Not applicable.
Supported systems
For a list of HP 9000 and HP Integrity systems that this release of HP-UX 11i v3 fully supports, see
the HP-UX Server Support Matrix at the following website:
http://www.hp.com/go/hpuxservermatrix
Mass Storage Stack 89