Scripting Example: How to set the MPIO LB policy

The following scripting example shows how to set the MPIO Load Balancing policy via a script calling WMI: Just to expand on the information below, FOO Failover Only RR Round Robin RRwS Round Robin with Subset LQD Least Queue Depth WP Weighted Paths ‘—————————————————————————– ‘ ‘ SET_LBP.vbs ‘ ‘ WScript which can be used to…


How to add the iSCSI Initiator User Interface to Windows Server 2008 Server Core edition

The following steps will allow you to access the User Interface (UI) for the iSCSI Initiator on a Windows Server 2008 Server Core installation, as an alternative to using ISCSCLI from the CMD line to configure the Microsoft iSCSI Initiator settings. There are two important caveats: 1. This is strictly speaking, unsupported, since this functionality…


iSCSICLI Batch file to quickly connect to an iSCSI target

This script can be run from the command line including Server Core to quickly connect to an iSCSI target Pre-Requisites: Windows host running the Microsoft iSCSI Software Initiator  (You can check the iSCSI initiator location guide on how to get the initiator here:   http://blogs.msdn.com/san/archive/2008/07/28/microsoft-iscsi-software-initiator-location-guide.aspx       2. Pre-configured iSCSI target. You will first need to create…


Hyper-V Server Website is now live

  www.microsoft.com/hvs www.microsoft.com/hyper-vserver www.microsoft.com/hyper-v-server Microsoft Hyper-V Server 2008 provides a simplified, reliable, and optimized virtualization solution, enabling improved server utilization and reduced costs. Since Hyper-V Server is a dedicated stand-alone product, which contains only the Windows Hypervisor, Windows Server driver model and virtualization components, it provides a small footprint and minimal overhead. It easily plugs…


Portal Hopping

  The Microsoft iSCSI Software Initiator implements a number of key features in the initiator to protect against loss of connectivity to an iSCSI target.  These include support for Microsoft MPIO, (MCS) multiple connections per session, portal hopping,  as well as advanced error recovery.  The loss of connection to an iSCSI target portal could be…


Logo Listings for Enterprise Storage arrays

Windows Server supports a broad ecosystem of SAN storage arrays and enterprise class storage devices. The Windows Server tested products catalog includes listing for hardware devices which have been qualified using the Windows Logo tests to validate interoperability with the Windows Server platform.   Home Page for Windows server tested products   http://www.windowsservercatalog.com/results.aspx?bCatID=1338&cpID=0&avc=10&OR=1 There are 2…


How to set the MPIO policy for a disk in Windows Server 2008

  MPIO LUN policy management is integrated in the Disk Management MMC. To configure MPIO LUN load balancing, start the Disk Management MMC (diskmgmt.msc): Right-Click the Desired disk (in this case Disk 1) to change the policy for, and choose properties: Click the MPIO tab in the Device Properties. The Desired Load Balance Policy can…


Command line reference for Microsoft iSNS Server

below is a quick command line reference for iSNS.  More details available in our user guide http://www.microsoft.com/downloads/details.aspx?familyid=0dbc4af5-9410-4080-a545-f90b45650e20&displaylang=en Usage: ISNSCLI [program function] [parameter0] [parameterN] Program functions: ListNodes LN Lists all registered Nodes. A Node is an iSCSI initiator or target. ListNodeDetails [Node] LND [Node] Lists details for the specified Node, such as Node attributes and related…


Multipathing Support in Windows Server 2008

  Windows Server 2008 includes many enhancements for connecting to a Storage Network. One notable feature is inclusion of native multipathing (Microsoft MPIO) inbox. Microsoft MPIO in delivers high availability by establishing multiple sessions/connections from a Windows Server host to an external storage array through iSCSI, Fibre Channel, and SAS (Serial Attached SCSI). Microsoft MPIO…


Microsoft MPIO Command Line Reference (mpclaim) and Server Core Configuration

To install MPIO on Server core on Windows Server 2008 run this command from a command prompt “ocsetup MultipathIo /norestart” and then run “ mpclaim –r –i –a “” ” This command Installs the Microsoft MPIO Optional Component on non Server Core installations  and then sets the Microsoft MPIO DSM (MSDSM) to claim all unclaimed…