Was Ist Iscsi Initiator For Mac
ISCSI has become extremely popular in recent years, and so more and more people enjoy the numerous advantages of the easy network sharing. The client software for this standard is even embedded in Windows 7, however still there is no default iSCSI Initiator for Mac.
I would like to answer several questions about iSCSI which you were too embarrassed to ask. What is iSCSI Initiator?
Why do you really need it? Where to get and how to use iSCSI Initiator for Mac? What is iSCSI Initiator and iSCSI Target? ISCSI is a protocol that allows sharing data via LANs, WANs and Internet. I won't go deep into details and just say that it is something like SCSI commands used over IP network.
This standard requires at least two computers – the first one plays a role of storage server and the second PC appears to be a client of the above mentioned server. For both operating systems – Windows and Mac – iSCSI Initiator represents a client computer, while iSCSI Target is a server. Why do I need iSCSI Initiator for Mac or Windows? As I have already mentioned, iSCSI server is a huge data storage that can be shared with any computer in the network.
With iSCSI Initiator, Mac or Windows OS gets almost unlimited access to the remote server with lots of data. You can use remote images or disks, work with some resources together with other people and store much useful information on the server, economizing the resources of your computer. Indeed, forget about gigabytes of data on your Mac – iSCSI Initiator gives you a key to the various storage servers, the disks on which can be used just like the local ones.
And they don't require any byte of your hard drive! Is there any default iSCSI Initiator for Mac?
Although with iSCSI Initiator Mac OS gets a great advantage, the developers haven't embedded it into the operating system. So to evaluate the benefits of iSCSI, Mac OS X machine needs third-party software. I would like to recommend DAEMON Tools – a program, which allows working with iSCSI Targets on your Mac.
This easy-to-use tool also gives you an opportunity to mount different types of images and to organize the collection of your virtual disks. ISCSI Initiator is a separate feature of the program that can be purchased additionally. What is iSCSI Initiator in DAEMON Tools and how to use it? DAEMON Tools is a compact tool for image mounting. Also, it may include iSCSI Initiator – additional feature that allows you to work with targets. With iSCSI Initiator Mac machine is able to mount not only local images, but also the remote virtual disks.
To launch and use iSCSI Initiator for Mac, perform the following steps:. Download and install DAEMON Tools for Mac from the program's official site. 20-day trial.
On the iSCSI Targets tab, click Add option in the tab's contextual menu or Add icon in the toolbar:. Enter the server's IP address or name, choose the Port. Note that the default port number is 3260. When the server is ready to use, click the triangle near it to expand the list of available targets:. Select the target and choose Connect option in its contextual menu, or click Connect icon in the toolbar, or double-click on the target:. You have successfully connected to the target!
It appears in the program just like a local image, and you can use it as any other virtual disc: So, to use the advantages of iSCSI, Mac machine needs DAEMON Tools. I advise you to try the functions of the program for free during the trial period to decide whether it works for you.
By the way, the application allows you not only to create iSCSI Initiator for Mac, but also to work with numerous types of images, for example, with.
This document describes how to configure the following hosts to access Fibre Channel (FC) or iSCSI storage provisioned on a system running the latest operating environment:. Windows hosts.
AIX hosts. Citrix XenServer hosts. HP-UX hosts. Linux hosts. Solaris hosts This document is intended for those who are responsible for setting up host to access storage.
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Readers of this document should be familiar with FC or iSCSI LUNs and with the operating system running on the hosts that will access the LUNs. The Unisphere online help provides specific information about storage, features, and functionality. The online help and a complete set of documentation are available on the EMC Online Support website. System requirements. For a host to connect to LUNs on an iSCSI interface, the host must be in the same network environment with the iSCSI interface. To achieve best performance, the host should be on a local subnet with each iSCSI interface that provides storage for it. In a multi-path environment, each physical interface must have two IP addresses assigned; one on each SP.
The interfaces should be on separate subnets. To achieve maximum throughput, connect the iSCSI interface and the hosts for which it provides storage to their own private network. That is, a network just for them. When choosing the network, consider network performance. Path management network requirements. Directly attaching a host to a Unity system is supported if the host connects to both SPs and has the required multipath software.
Was Ist Iscsi Initiator For Mac Download
The following figure shows a highly-available iSCSI network configuration for hosts accessing a storage resource (iSCSI LUNs). Switch A and Switch B are on separate subnets. Host A and Host B can each access the storage resource through separate NICs. If the storage resource is owned by SP A, the hosts can access the storage resource through the paths to the interfaces on SP A. Should SP A fail, the system transfers ownership of the resource to SP B and the hosts can access the storage resource through the paths to the interfaces on SP B. VSS provides the backup framework for Windows Server 2003 R2, Windows Server 2008, and Windows Server 2012 and enables the creation of snapshots (called shadow copies for Microsoft VSS) — point-in-time copies of data. VSS is integrated with front-end applications so they can create and access shadow copies.
The VSS architecture includes VSS providers. A VSS provider creates and maintains shadow copies and acts as the interface to point-in-time imaging capabilities either on a storage platform (hardware-based provider) or in a host operating system (software-based provider). The Unity VSS HW Provider is a hardware-based provider that works directly with iSCSI and FC LUNs on the Unity iSCSI and FC interfaces and with the VSS service on Windows Server 2003 R2, Windows Server 2008, or Windows Server 2012 hosts to provide consistent shadow copy creation and addressing.
Because the Unity VSS HW Provider is a hardware-based provider, it reduces the load on the CPU and memory of the host. It is also more efficient in an environment where shadow copies of multiple volumes must be taken simultaneously. Refer to the Microsoft documentation for more information about VSS. Windows host — Using multi-path management software over iSCSI. Multi-path management software manages the connections (paths) between the host and the storage system to provide access to the storage if one of the paths fails. The following types of multi-path management software are available for a Windows 2003, Windows Server 2008, or Window Server 2012 connected host:. EMC PowerPath software on a Windows 2003, Windows Server 2008, or Windows Server 2012 host.
Refer to the Unity Support Matrix on the support website for compatibility and interoperability information. Procedure. Download the latest iSCSI initiator software and related documentation from the Microsoft website to the host. After you download the appropriate software, double-click the executable to open the installation wizard, click Next in the Welcome page, and follow the steps in the installation wizard.
If this is an upgrade of existing iSCSI initiator software, you must restart the host. For shared storage, make the LanManServer service dependent on the iSCSI initiator service by starting the LanManServer before the iSCSI initiator service with the following command. Before an initiator can establish a session with a target, the initiator must discover where the targets are located and the names of the targets available to it. To obtain this information the initiator uses the iSCSI discovery process.
The iSCSI interfaces support discovery with or without an iSNS server. Without iSNS discovery, you must add the target information to the Microsoft iSCSI Initiator. With iSNS discovery, the initiator queries the iSNS server where all iSCSI initiators and targets register themselves, and the server responds with a list of available targets.
When the target information is available to the Microsoft iSCSI Initiator, you can connect the host initiator to the target so the host can access the iSCSI LUNs. Unless you are using iSCSI targets in a clustered environment, avoid giving more than one initiator access to the same LUN. Conflicts can occur if more than one initiator tries to write to the LUN. If the LUN is formatted with the NTFS file system in Windows, simultaneous writes can corrupt the NTFS file system on the LUN.
Each iSCSI interface is a target. If a storage system has two iSCSI interfaces, it has two targets. Each target has one session. To connect to an iSCSI target, you must add the target IP address in Microsoft iSCSI Initiator.
If you have multiple targets (iSCSI interfaces), you can use the Microsoft iSCSI initiator to discover the targets through an individual IP address. To configure the Windows host initiators: Go to the section below for the host’s configuration: For Windows Server 2003 or Windows Server 2008 SP2 or earlier:.
Multipath configuration with iSCSI or PowerPath: For Windows Server 2008 R2 or Windows Server 2012:. Multi-path configuration with iSCSI or PowerPath: gives an end-to-end example of setting up a two-node Windows Server 2008 R2 Exchange cluster in an MPIO multi-path configuration. For Windows 7: Configuring a Windows Server 2003 or Windows Server 2008 SP2 or earlier initiator to connect to an iSCSI interface — multi-path configuration. Before you configure a Windows Server 2003 or Windows Server 2008 SP2 or earlier initiator to connect to an iSCSI interface in a multi-path configuration:. You must have configured the iSCSI interface with two IP interfaces on two separate physical ports.
Each IP interface should be on a separate IP subnet. The Windows host must have two network interfaces. One interface must be on the IP subnet with one of the storage system iSCSI interfaces, and the other interface must be on the IP subnet with the other storage system iSCSI interface. To configure a Windows Server 2003 or Windows Server 2008 SP2 or earlier initiator to connect to an iSCSI interface in a multi-path configuration, perform these tasks:. Multi-path configuration with Native MPIO:.
Multi-path configuration with PowerPath:. Local adapter to Microsoft iSCSI Initiator. Source IP to the IP address of the host interface on the first subnet with the storage system iSCSI interface. If the host initiator is configured for optional initiator CHAP on the storage system iSCSI interface:. Select CHAP logon information.
Leave User name as the default value, which is the initiator’s IQN. Set Target secret to the same secret that is configured for the host initiator on the storage system iSCSI interface. The storage system iSCSI interfaces support CHAP secrets of 12 to 16 characters only. If the iSCSI interface is configured for mutual CHAP, select Perform Mutual Authentication. Click OK to close the Advanced Settings dialog box. Click OK to close the Add Target Portal dialog box. In the Discovery tab, verify that the address of the first iSCSI interface appears in the Target Portals list.
Click the Targets tab. The IQNs representing the ports configured on the storage system appear in the Targets list with an Inactive status.
In the Targets tab, select a storage system iSCSI interface target name, and click Log On. The Log On to Target dialog box opens. In the Log On to Target dialog box:.
Select Automatically restore this connection when the system reboots. Select Enable multi-path. Click Advanced. The Advanced Settings dialog box opens.
In the Advanced Settings dialog box, set the following. Local adapter to Microsoft iSCSI Initiator. Source IP to the address of the host interface on the first subnet with the storage system iSCSI interface. Target Portal to the address of the storage system iSCSI interface on the first subnet with the host interface. To find the IP address associated with this IQN, note the IQN name, and then go to Storage Block iSCSI Interfaces in Unisphere. If the host initiator is configured for optional initiator CHAP on the storage system iSCSI interface:.
Select CHAP logon information. Leave User name as the default value, which is the initiator’s IQN. Set Target secret to the same secret that is configured for the host initiator on the storage system iSCSI interface.
The iSCSI interfaces support CHAP secrets of 12 to 16 characters only. If the storage system iSCSI interface is configured for mutual CHAP, select Perform Mutual Authentication. Click OK to close the Advanced Settings dialog box. Click OK to close the Log On to Target dialog box.
Repeat steps 11 through 16 for all other targets listed in the Targets tab. Ensure that the relevant IP addresses are selected accurately. Once logged on, each listed target must appear with the Connected status. Identify and set active paths to the storage system. The Target Properties dialog box opens. On the Devices tab, click Advanced. The Device Details dialog box opens.
Click the MPIO tab. This tab lists all valid paths, with a single path set as Active. This path goes to the SP owner of the storage resource.
Ensure that Load Balance Policy is set to Round Robin With Subset. Click the interface with the path set as Active, and click Details.
In the MPIO Path Details dialog box, note the value in the Target Portal column. This is the IP address associated with the iSCSI interface created on the relevant port of the SP. Click OK to close the MPIO Path Details dialog box.
For each interface with the path set as Standby, click Details to launch the associated MPIO Path Details dialog box. Review the value in the Target Portal column, and identify the interface that has path to the same SP as the interface with the path set as Active. In Unisphere, go to Settings iSCSI Settings to review the list of interfaces/IP addresses with path to the same SP. For the interface with the path to the same SP, on the MPIO tab, click Edit.
In the Edit Settings dialog box, set Path Type to Active. Click OK to close the Edit Settings dialog box. On the MPIO tab, verify that the interface appears with the path set as Active. Click OK to close the Device Details dialog box. Click OK to close the Target Properties dialog box. Click OK to exit the Microsoft iSCSI Initiator.
Before you configure a Windows Server 2008 R2 initiator to connect to a storage system iSCSI interface in a multi-path configuration:. You must have configured the storage system iSCSI interface with two IP interfaces on two separate physical ports. Each IP interface should be on a separate IP subnet.
The Windows host must have two network interfaces. One interface must be on the IP subnet with one of the storage system iSCSI interfaces, and the other interface must be on the IP subnet with the other storage system iSCSI interface. To configure a Windows Server 2008 R2 or later initiator to connect to a storage system iSCSI interface in a multi-path configuration, perform these tasks:. Multi-path configuration with Native MPIO:. Multi-path configuration with PowerPath:. Procedure. Launch the MPIO application.
On the MPIO Properties dialog box, click the Discover Multi-Paths tab. Under SPC-3 compliant, select Add support for iSCSI devices. A Reboot Required dialog box opens. In the Reboot Required dialog box, click Yes.
Once the server reboots, launch the MPIO application, and verify that the MPIO is configured to claim all iSCSI devices. Discover the storage system iSCSI interface in an environment — Windows Server 2008 R2 in multi-path configuration. Local adapter to Microsoft iSCSI Initiator. Initiator IP to the address of the host interface on the first subnet with the storage system iSCSI interface. Target portalIP to the address of the storage system iSCSI interface on the first subnet with the host interface. You can find this address with Unisphere by selecting Storage Block iSCSI Interfaces. Click OK to close the Advanced Settings dialog box.
Click OK to close the Connect to Target dialog box. Repeat steps 8 through 13 for all other targets listed in the Targets tab. Ensure that the relevant IP addresses are selected accurately. Once connected, each listed target must appear with the Connected status.
Review the paths to the SP.