HP 3PAR System Reporter 3.1 Software Release Notes (QL226-96334, December 2012)

Changes in HP 3PAR System Reporter Software 3.1 since Version 2.9
DescriptionItem
AO behavior continues unchanged for HP 3PAR OS 3.1.1 and earlier. For HP 3PAR
OS 3.1.2 systems, Adaptive Optimization behaves as follows:
regionmover (Adaptive
Optimization)
• AO configurations for HP 3PAR OS systems are allowed insofar as they are not
deleted following an upgrade from HP 3PAR OS 3.1.1. However, these AO
configurations are not executed by regionmover and are marked as inactive.
• Following an upgrade from HP 3PAR OS 3.1.1, AO configurations remain and
can be used by administrators as a reference to recreate the AO configurations
on the nodes.
NOTE: Recreation of the AO configuration on the nodes is a manual process.
There is no automated means of transferring AO configurations from System Reporter
onto the HP 3PAR OS 3.1.2 system.
Key enhancements to the AO algorithms are as follows:AO algorithms
• AO parameters have been tuned so that the system is a bit more aggressive moving
data to faster tiers, especially in cases where the slow tier has very little spread in
access rate density among the regions.
• Absolute thresholds have been added for access rate density above which regions
are automatically considered for tier 0 and 1. If service time for a lower destination
tier is too high, regions are not moved to that tier unless upper tiers have no space.
This had already been considered when moving up to a faster tier; now it is also
considered when moving down to a slower tier.
• Instead of using an absolute service time as a threshold for determining whether
the destination tier is too busy, the service time threshold is determined based on
CPG drive type and RAID type. For example, the threshold will be lower for SSDs
and RAID1 than it will be for NL with RAID6.
Defects Fixed in HP 3PAR System Reporter 3.1
ResolutionDescriptionBug
A check has been added to abort
the AO unless at least 50% of the
For System Reporter 2.9, the AO configuration looks for two samples
within the measurement hours interval specified. However, because
Available AO
samples cover
desired interval is covered by the
samples.
the two samples could be very close together (that is, the available
samples covered too small a fraction of the requested measurement
too small a
fraction of the
interval), only a very limited view of the measurement interval was
possible.
requested
measurement
hours.
Column width has been increased
in the HP 3PAR OS 3.1.2 code.
In HP 3PAR OS 3.1.2, VV WWNs can be 16 bytes (32 characters)
rather than 8 bytes (16 characters), so the column width must be
increased for tables such as vvspace.
VV WWN
column width is
too narrow (8
bytes [16
characters]).
This issue has been resolved in
System Reporter 2.9 MU1 P02
The sysrptsched process appears to stall when trying to create a
process to run a scheduled report.
On Windows
OS, scheduled
report creation
can hang.
and in System Reporter 3.1. The
fix is to detect the hang and
restart the processes.
The code was modified to get the
weekday number and be
Where a schedule is specified, the weekday name can be used. The
system matched against the English name (Monday, Tuesday, etc.).
In different locales, the weekday name might differ and fail to match.
Scheduling does
not work
correctly in
different locales.
translated explicitly to the English
weekday names so that the
comparison works even in
different locales.
Changes in HP 3PAR System Reporter Software 3.1 since Version 2.9 5