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Using EMC PowerPath with Oracle ASM

Introduction This post explains how to configure and use EMC PowerPath with Oracle ASM for clustered Oracle RAC servers running on RHEL 6.4 or higher servers. Oracle ASM ensures consistent naming of devices across RAC clusters, and also maintains permissions on devices across reboots, a feature that was important until UDEV rules were added to Linux with the 2.5 kernel. EMC PowerPath is an advanced... read more

How To Fix Parameter is Incorrect Error Message When Adding Disk to Windows Cluster

Introduction So there you are adding a new drive to a folder on a mounted drive on a Microsoft Windows Server 2008 R2 / 2012 R2 Clustered SQL server and during the format and assigning of the disk to the folder of the mount drive a big error pops up stating Parameter is Incorrect. And you are now dead in the water, or at least you think. We’ll all is not lost, there is a solution! You will encounter... read more

How To Migrate To New WWN’s on VNX

Overview This document covers how to add a host initiator that is not logged into the fabric or VNX. The reason we would do such an operation is when systems (Blades) are moved to another chassis or HBA cards replaced that change the WWN, that will allow the system to login and see the assigned storage. This is useful in network refreshes and in addressing hardware failures. Several items are needed... read more

How to Change FA Ports on an Existing VMAX PortGroup

Introduction You have a situation on your VMAX where the port utilization is up and you would like to move the FA ports assigned to a PortGroup moved to a lesser utilized set on you switch. In this post we will cover how to move to a new port group and fix the mapping of all attached devices on your EMC VMAX. We will cover unmapping ports and fixing zoning. Process First part of the puzzle to create new... read more

Using EMC PowerPath Migration Enabler for Storage Migrations on Windows

Introduction This post covers the use of PowerPath Migration Enabler to migrate files and programs from old to new disks without interruption on Windows servers. If you are migrating to new storage, this is a very handy thing to have. You must have PowerPath 5.7 SP2 or higher installed with the PowerPath Migration Enabler license key enabled on the host. Process The Process Before we start you will need... read more

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