3PAR InForm OS 2.3.1 MU4 Release Notes (QL226-96261, September 2011)

6. Reset Remote Copy period to the sync period it was at prior to setting to 0 in step 1.
WARNING! Steps 2 and 4 are critical to ensure Recover Manager-created snapshots and Remote
Copy-created snapshots do not interfere with each other.
NOTE: See Product Alert 247-200010 in DCS for a more detailed explanation.
Firmware Core Dump from FC Adapter by LSI (Bugs 24178, 30353, 32351)
Under certain error conditions, the firmware on a Fibre Channel Adapter from LSI may crash resulting
in a firmware core dump. The driver for the adapter resets the port pair after collecting the firmware
core dump.
Workaround
There is no workaround for this and no user action is required. After the core dump is generated, the
port pair is reset and comes online automatically after a few seconds.
Windows 2003 Pop-Up
Client machines running the Windows 2003 operating systems receive an unknown devicepop-up
from Windows Plug and Play security checking when connecting to a 2.3.1 MU2 storage system.
Workaround
To avoid this device pop-up message you can install NULL driver for 3PAR SCSI Enclosure Service
device located on DCS.
Cage Loop Down Alert is not Auto-Recovered (Bug 40274)
There are certain conditions during which a drive cage loop missing alert may not be auto-resolved
even though the drive cage loop comes back.
Workaround
Once it has been verified that the alert is indeed invalid, check showcage -d and showpd to verify
the loop is present. The alert can be removed by removealert or setalert.
System Manager Could Crash During Rolling Upgrade if Remote CopyGroups Running (Bug 40867)
When creating snapshots during the shutdown process there is a known race condition that may result
in a system manager crash. Therefore, the user is no longer permitted to manually take snapshots
during this process. However, this is not the case with snapshots that are taken when a synchronous
remote copy group is stopped.
During a rolling upgrade synchronous groups are normally not stopped. However, if there is a target
failure during the process any associated groups will automatically be stopped, and if the group is
synchronous a snapshot for each volume in the group will be taken. This leaves the system open to
hitting the race condition described above.
Workaround
Stop all remote copy groups before starting a rolling upgrade.
No Explicit Way to Reset the Default Value for Tunelinks (Bug 43579)
setrcopytargettunelinks command can be used to adjust the performance value for the target's
links using the <bandwidth> and <latency> specifiers. After using this command, there is no
explicit way for the user to reset the tuning parameters back to its default values.
Workaround
Reset the parameter to the default value by reissuing tunelinks with bandwidth=128000 (or higher)
and latency=100.
HP 3PAR InForm Operating System Release Notes 11