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For this guide I simply used the Big WHS which uses Windows Server 2008 R2 as a base and is running the Microsoft iSCSI Software Target.
With plenty of drives, being able to export volumes using iSCSI is important on the network.
Once it is, one usually will see the IQN of the iSCSI target listed on the Targets tab with an inactive connetion. Next, one generally wants to click Connect and connect to the correct IQN of the iSCSI Target that one is looking to attach.
Now that the target is connected, one should go to the Volumes and Devices tab and select Auto Configure.
Once this is done, one can go into Windows Disk Management and see the volume attached as one would if a drive was directly connected into the machine. Overall, this guide shows that once the iSCSI target has been configured, connecting clients to the network storage is very simple. Many businesses, regardless of size, are looking to SANs to address increasingly demanding storage needs. This Gigabit Desktop Adapter is automatically detected by the Windows® OS during installation, simplifying the setup process.
The Hardware version is located on the product information sticker on the bottom of the box and on the bottom of the product. WD is trying to make NAS storage easy, so most of the hard work like building the RAID array is done at the factory.
Next you need to create a password for the default admin account on the My Cloud DL4100 and then click next. The next step is setting up your personal cloud.  If you want to be able to access your files from outside your home you must fill in this information as you need that account to login remotely.
The Microsoft iSCSI initiator actually has many more features than will be shown here, but this series is meant to be a basic guide to getting Microsoft iSCSI targets and initiators set up. This example only has one IQN to make it clearer, but with typical storage implementations one will see this list have lots of IQNs listed, making it all the more important to use descriptive names. From this point forward, one can use the device as though it is a standard drive when it comes to formatting. There are many considerations when deciding to use iSCSI versus standard file-based network attached storage.
For his day job, Patrick is a management consultant focused in the technology industry and has worked with numerous large hardware and storage vendors in the Silicon Valley. SANs offer flexibility for a variety of common infrastructure scenarios, including database and email servers, common file storage, and virtualization.
I found that I understand better some aspects of technology from such articles, than from Technet Library.
The views and opinions expressed on this website are my own and not the views and opinions of my employer.
Computers and operating systems that support the Advanced Configuration and Power Interface (ACPI) can remotely wake your PC from anywhere on the network with the Wake-on-LAN feature.
This is something you’ll want to enable if you want to use the WD My Cloud mobile app on your iOS or Android smartphone and tablet. For Microsoft Windows, there is a built-in iSCSI initiator software that is very simple to configure to work with iSCSI targets. Once clicking OK if all went well one should see on the Targets tab that everything is connected. The goal of STH is simply to help users find some information about basic server building blocks. SANs are incredibly popular when fault tolerance is a requirement, allowing quick recovery from disk or server failure. Once connected, access music, documents, movies, and photos that are shared on your network. With support for 802.3x flow control, data is received and transmitted smoothly to and from the network. Additionally, it utilizes autonegotiation to automatically adjust to the highest supported transfer rate (up to 2Gbps in full duplex mode).
Once this is done, one needs to run the iSCSI initiator software and allow access via UAC prompts if one comes up. With that being said when looking at things like VMware vMotion or other features, simple network attached storage is not enough.



SANs can be built using a variety of technologies, ranging from DAS, to Fibre Channel, to incredibly popular iSCSI networks. You can also access your network’s available high-speed Internet connection to check e-mail, browse the Web, and chat with friends and family online.
Assuming Quick Connect does not work on the Targets tab, one may need to go to the Discovery tab and make sure that the iSCSI Target server is on the target portals list. Hopefully this series of guides help one to quickly configure iSCSI targets and initiators for the Windows platform. VMware Workstation and other IT tutorials.Free Stuff – Free virtualization utilities, ESXi Free, Monitoring and free backup utilities for ESXi and Hyper-V. Although many SAN architects and administrators focus on building a fault-tolerant disk subsystem, or clustering the servers in front of them, it isn’t uncommon to find attention to the actual connections to the SAN neglected, with basic configurations that have single points of failure or less than optimal overall performance caused by bottlenecks and misconfiguration.
In addition, with blazing fast Gigabit speed and the 802.1p Quality of Service (QoS) feature, you can make and receive jitter-free Voice over IP (VoIP) calls as well as experience lag-free LAN gaming. When ESX server first installs there is a default service console management interface and VM network port group as a default. What we need is to create a new VMkernel interface which we’ll be using for ISCSI traffic. Note that some of these options might not be available to you, depending on the type of SAN you have, as well as the support for MPIO available from the manufacturer of the components that it consists of. Server 2008 R2 supports the following six MPIO configurations: Failover Failback Round-Robin Least Queue Depth Weighted Path Least Blocks Failover. The simple Failover configuration, also known as Fail Over Only, requires two or more paths from the server to the disks whether DAS, via host bus adapters (HBAs) in a Fibre Channel system, or NICs and paths in an iSCSI SAN. The SAN administrator will select one path as the primary communication path and each additional path as failover paths.
ESX Virtualization site has started as a simple bookmarking site, but quickly found a large following of readers and subscribers. Each failover path has a preference assigned to it, and each path is used in turn from the most preferred to the least preferred when the primary path fails. When the primary path is restored, the SAN administrator must manually configure the system to use it, switching back from the failover path in use.  Failback.
The second configuration option, called Failback, is somewhat related to the Failover option. Like Failover, a primary path is defined; when it fails, communication is routed over alternative paths in decreasing order of preference.
However, unlike Failover, communication is routed back over the primary path when it’s restored. Failback is typically used when a primary communication path is faster or has fewer devices between the server and the disk subsystem than Failover paths and therefore has fewer points of failure. It should be noted that Failover and Failback operations aren’t necessarily instantaneous, and there might be momentary disruptions in service when communication paths are switched. Although many applications won’t suffer from momentary disruptions, high-performance applications such as database servers and heavily used email mailbox servers might see even a momentary disruption as a disk failure, which could cause unintended consequences such as server cluster node failovers on connected servers. You just follow the assistant which will walk you through the necessary steps to create and format the new volume. For this reason, Failover is typically preferred over Failback unless the differences between the primary and alternative paths are marked. Figure 1 shows an example of Failover and Failback configurations in an iSCSI SAN deployment. I created and placed a  Virtual Machine on that Starwind 20Gigs volume and stopped one of those Nodes where I installed Starwind. When a server has two or more communication paths, the SAN administrator can choose to leverage them in a Round-Robin configuration. In this configuration, if a path fails, it ceases to be used by the server and is dropped from the round-robin pool of available paths until communication is restored. In production environment you won’t be using VMs as a Starwind Targets, but a real servers.
The advantage of this configuration is that requests are sent over multiple paths to the disk subsystem, which can improve performance. Free SoftwareAltaro VM Backup - Protect your VMware & Hyper-V VMs for FREE with Altaro VM Backup.
This configuration doesn’t take into account the performance characteristics of each path, the complexity of the requests, or a queue of outstanding requests on a path, if any.


By using 2 existing servers running under Windows you can achieve very reliable and fail-over redundancy with Starwind HA.This solution is quite easy to setup by using EXISTING hardware already running Windows.
To address potential performance issues, a SAN administrator should use this configuration only if all communication paths are equal. In most cases those windows boxes are with OEM license from Microsoft so you can’t really virtualize those machines, because that the OEM license lives and dies with that physical server. In addition, it can be assumed that all requests will likely be equivalent and there will be no queue of outstanding requests on any path greater than on any other path (which can happen if there are switches or routers on the path). If these assumptions hold true, a SAN administrator might still fail to see an increase in overall performance if the disk subsystem simply takes all requests into a single queue for processing regardless of the number of paths they travel over, and if the time it takes to process each request is greater than the time it takes a request to travel over any individual path. Performance can also degrade in a round-robin configuration if there’s a failure in a component on a path, as well as if failover is configured at the component level, which results in lower performance. A variation on Round-Robin configuration, called Round-Robin With Subset, is one in which one or more paths are set aside for failover in decreasing order of preference.
When all round-robin paths become unavailable, the highest preference failover path available is used until one or more paths in the round-robin configuration are restored.
You can send a note to [email protected] and we`ll be glad to help you all possible ways! It requires drivers and components in the SAN to be able to report the number of outstanding requests for each path.
MPIO will route proportionately more requests over the path with the least number of outstanding requests. This configuration doesn’t require (or benefit from) all paths having equal performance characteristics or every request being similar in complexity.
Although MPIO is easy to install, further configuration is highly dependent on your type of SAN and the equipment that it’s comprised of. The reason for this is that although Server 2008 R2 ships with support for what’s called a Device-Specific Module (DSM), you’ll most likely need to get a DSM from your vendor(s). Before you proceed to load DSMs and configure MPIO, I recommend that you consult documentation from your SAN equipment manufacturer, because it’s easy to make mistakes that can result in corrupt or lost data. In addition, iSCSI is becoming the SAN of choice for many enterprises because of its flexibility and low cost of entry.
This can be done by launching the MPIO tool, selecting the Discover Multi-Paths tab, selecting the Add support for iSCSI devices check box, and clicking the Add button.
This is most simply achieved by using multiple NICs to connect to your iSCSI-based SAN, with IP addresses on unique subnets. You can verify that your iSCSI Targets can be managed by MPIO by typing the following command: MPclaim -s -d Figure 3 shows this command’s output. You should already have targets listed under the Discovered targets section of the iSCSI Initiator Properties applet.
To configure MPIO for a target, select the target and click the Connect button to launch the Connect To Target dialog box. In the dialog box, select the Enable multi-path check box and then click the Advanced button. In the Advanced Settings dialog box, configure the alternative path to your iSCSI Target; then, click OK to exit and click OK again to exit the Connect To Target dialog box. Figure 4 shows an iSCSI Target that’s represented as Disk 1 on the server, with two paths to it. Clicking the MPIO button launches the Device Details dialog box, from which you can modify the load balance policy, as Figure 5 shows.
The default policy for iSCSI multi-paths is Round Robin, but you can pick from the other configurations supported by MPIO, with the exception of Failback.
As Figure 6 shows, selecting a Path Id and clicking the Details button will show you details of the path to the iSCSI Target, such as the IP address and port of the iSCSI Target Portal. The Edit button launches a dialog box that you can use to specify the path type (active or standby) and weight (preference) each path has for MPIO configurations that let you specify active and standby paths, as well as a weight or preference for each.



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