3PAR InForm OS 2.3.1 Upgrade Pre-Planning Guide

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Release 2.3.1 Upgrade Pre-Planning Guide InForm OS Version 2.3.1
With Windows 2008 and 2008R2 Failover Clusters, including Failover Clusters as guest OS
clustering in a virtual environment (for example: Win2008 R2 Failover Cluster as virtual
machines on VMware ESX), server node-failover can occur while performing online
software updates of the InForm OS. In order to avoid a server node-failover during InForm
OS updates, 3PAR requires all data LUNs that are presented to the Microsoft cluster from
the 3PAR InServ Storage Server first to be put into Maintenance Mode. Once the InForm
OS online update is completed, the maintenance mode must be turned off. To turn ON/OFF
maintenance mode for each of the cluster 3PAR disks start the Failover Cluster Manager
application. Double-click the storage icon, and a summary of the storage will be displayed
on a window. For each of the clustered 3PAR data disks (not including any Witness /
Quorum disks), right-click and select the More Actions option for the menu and either
turn ON of OFF maintenance for the disk. For details, see the following example:
For Windows 2008 and Windows 2008R2 using MS MPIO, Microsoft Hotfix must be applied
before InServ update in accordance with:
Microsoft KB 2406705 for Windows 2008R2
NOTE: Does not apply to Windows 2008 systems running Veritas DMP
driver.