istorage Server: HA SAN for Windows Server 2008

iStorage Server: HA SAN for Windows Server 2008 Tuesday, Feb 21st 2012

KernSafe Technologies, Inc. www.kernsafe.com Copyright © KernSafe Technologies 2006-2012. All right reserved.

Table of Contents Overview....................................................................................................................................................... 3 Configuring on iStorage Server .................................................................................................................... 4 Preparing HA Storage ............................................................................................................................... 4 Preparing HApartner Storage ................................................................................................................ 10 Creating Application ................................................................................................................................... 17 Configuring on Client .................................................................................................................................. 23 Install MPIO Feature .............................................................................................................................. 23 Connect Targets ...................................................................................................................................... 24 Enable Multipath Support...................................................................................................................... 28 Contact........................................................................................................................................................ 32

Overview KernSafe iStorage Server is an advanced and powerful, full-featured software-only iSCSI Target that fully conforms to the latest iSCSI Standard 1.0 (former Draft 20). It is an IP SAN solution allowing you to quickly export existing storages such as disk images, VHD files, physical disks, partitions, CD/DVD-ROMs, tapes or any other type of SCSI based devices and even a variety of popular CD/DVD images to the client machines. The software thus delivers immediate benefits, as it allows storage to be consolidated, virtualized and centrally managed. iStorage Server also provides RAID-1 (mirror) feature enabling you to create two iSCSI devices for mirror backup. Furthermore, iStorage Server also supports a lot of features such as: VHD (Virtual Hard Disk) target, snapshots, STPI, RAID-1 and failover, these features are very important and poplar in storage industry world and make iStorage Server is suitable for any size of business. High availability is the implementation of technology so that if a component fails, another can take over for it. By using highly available platforms, the downtime for a system can be reduced, and, in many cases, it can be reduced to a short enough time that the users of the system do not see the failure. This document gives you detailed step-by-step instructions on KernSafe iStorage Server configuring for Windows Server 2008. We need at least two servers and one client, in this document we prepare the three computers as follows: Detail iStorage Server1 iStorage Server2 Client

IP Address 192.168.0.199 192.168.0.177 192.168.0.161

OS Windows 2000 SP4 + Windows 2000 SP4 + Windows Server 2008

Configuring on iStorage Server Preparing HA Storage We create HA Storage on Server1. Launch the iStorage Server management consolle, press the Create button on the toolbar of iStorage Server management console, the Create Device Wizard is shown. Select a device type

Choose Hard Disk. Press the Next button to continue.

Choose Image File in iSCSI Medium Type page. Then press Next button to continue.

We choose Standard Image File and then press the Next button to continue. Specify image file path and size.

Select Create a new image file or Use existing image file if you already have one. Specify the device size. Press the Next button to continue. Set authorization mode.

Specify authorization mode as you required, we take Anonymous as an example. Press the Next button to continue. Finish creating iSCSI Target.

Type a target name in the Target Name field, or use the default. Check the Enable multiple initiators with full access connected (sharing and clustering) check box. Press the Finish button to continue. Now the sample images are shown in the iStorage Server management console if successful.

Preparing HApartner Storage We create HApartner Storage on Server2. Launch the iStorage Server management consolle, press the Create button on the toolbar of iStorage Server management console, the Create Device Wizard is shown. Select a device type

Choose Hard Disk. Press the Next button to continue.

Choose Image File in iSCSI Medium Type window. Then press Next button to continue.

We choose Standard Image File and then press Next button. Specify image file path and size.

Select Create a new image file or Use existing image file if you already have one. Specify the device size. Press the Next button to continue. Set authorization mode.

Specify authorization mode as you required, here we use Anonymous type. Press the Next button to continue. Finish creating iSCSI Target

Type a target name in the Target Name field, or use the default. Check the Enable multiple initiators with full access connected (sharing and clustering) check box. Press the Finish button. Now the sample images are shown in the iStorage Server management console if successful.

Creating Application On iStorage Server 1, right click Applications on the left tree of the main interface, choose Create Application on the pop-up menu, the Create Application Wizard is shown.

Choose Failover iSCSI SAN Node. Then press Next to continue.

Check the HA storage and click Edit to find the mirror target.

Input the IP and port of server2 in iSCSI Source tab, then click Discovery on the bottom of the window to find the mirror target, choose the HApartner in the down-list. Press OK button to continue. Note: If the target needs CHAP authorization, you should provide User name and secret to logon.

The mirror target will be added to the window, then press the Next button to continue.

Now, the mirror target should be synchronized to the base target, if the two targets are both the new one and do not be initialized, we can choose Create mirror device without synchronization (Manual Initialization), otherwise, we must choose Create mirror device with full synchronization from base iSCSI target. Press the OK button to continue.

Click the Finish button to complete the application creation.

Now the application will be shown in the main interface if successful and the configuration on the server1 is completed. We do the same operations on iStorage Server2 to create an application, choose HA as the mirror target, after the creation, the main interface will be shown as follows:

Configuring on Client Install MPIO Feature Launch Start->Administrative Tools->Server Manager, go to Features item, and click Add Features. An Add Features Wizard will appear. In the features list select Multipath I/O feature and install it.

Connect Targets Lunch the Administrative Tools -> Microsoft iSCSI initiator. Switch to the Discovery tab. Add each IP address of the iStorage servers by clicking the Discover Portal… button and specifying server IP address.

Switch to the Targets tab.

Connect the targets by clicking the Connect button. A Connect to Target dialog is shown. Check Add this connection to the list of Favorite Targets. Target 1

Target 2

Click the OK button to connect the target.

Now, the client is connected to the two targets.

Enable Multipath Support Launch MPIO manager by clicking Start->Administrative Tools->MPIO. Go to Discover Multi-Paths tab, check Add support for iSCSI devices.

Click the Add button. Windows will prompt you to reboot the server.

Click the Yes button to restart your server. We have to initialize the disk before we use it. Click Start->Computer->Manage->Disk Management, the Initialize and Convert Disk Wizard window is shown.

Check Disk 2 and press OK to finish the initialization.

Right click on the Disks and then select New Simple Volume, partition and format the two disks followed by wizard. If successful, the new volumes created are shown in the figure below.

Note: Although we connect two targets, there will be only one disk on the client it working on both two active connections.

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