Your network contains three servers named Server1, Server2, and Server3. All servers run
Windows Server 2012 R2.
You need to ensure that Server1 can provide iSCSI storage for Server2 and Server3.
What should you do on Server1?
A.
Start the Microsoft iSCSI Initiator Service and configure the iSCSI Initiator Properties.
B.
Install the iSNS Server service feature and create a Discovery Domain.
C.
Install the Multipath I/O (MPIO) feature and configure the MPIO Properties.
D.
Install the iSCSI Target Server role service and configure iSCSI targets.
Explanation:
iSCSI: it is an industry standard protocol allow sharing block storage over the Ethernet. The
server shares the storage is called iSCSI Target. The server (machine) consumes the
storage is called iSCSI initiator. Typically, the iSCSI initiator is an application server. For
example, iSCSI Target provides storage to a SQL server, the SQL server will be the iSCSI
initiator in this deployment.
Target: It is an object which allows the iSCSI initiator to make a connection. The Target
keeps track of the initiators which are allowed to be connected to it. The Target also keeps
track of the iSCSI virtual disks which are associated with it. Once the initiator establishes the
connection to the Target, all the iSCSI virtual disks associated with the Target will be
accessible by the initiator.
iSCSI Target Server: The server runs the iSCSI Target. It is also the iSCSI Target role name
in Windows Server 2012.
http://blogs.technet.com/b/filecab/archive/2012/05/21/introduction-of-iscsi-target-in-windows-server-2012.aspx
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D sounds correct, before you can create an iscsi target you need the role to be installed.
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D. Install the iSCSI Target Server role service and configure iSCSI targets.
Explanation:
An iSNS server uses the Internet Storage Name Service protocol to maintain information about active iSCSI devices on the network, including their IP addresses, iSCSI node names, and portal groups. The iSNS protocol enables automated discovery and management of iSCSI devices on an IP storage network. An iSCSI initiator can query the iSNS server to discover iSCSI target devices.
ISCSI Target Server is a feature that lets administrators boot multiple computers on a network from a single operating system image that’s stored in a central location. iSCSI Target Server has the ability to boot hundreds of computers using just a single OS image.
In computing, iSCSI ( i/aɪˈskʌzi/ eye-SKUZ-ee) is an acronym for Internet Small Computer Systems Interface, an Internet Protocol (IP)-based storage networking standard for linking data storage facilities. It provides block-level access to storage devices by carrying SCSI commands over a TCP/IP network. iSCSI is used to facilitate data transfers over intranets and to manage storage over long distances. It can be used to transmit data over local area networks (LANs), wide area networks (WANs), or the Internet and can enable location-independent data storage and retrieval.
The protocol allows clients (called initiators) to send SCSI commands (CDBs) to storage devices (targets) on remote servers. It is a storage area network (SAN) protocol, allowing organizations to consolidate storage into storage arrays while providing clients (such as database and web servers) with the illusion of locally attached SCSI disks.[1] It mainly competes with Fibre Channel, but unlike traditional Fibre Channel which usually requires dedicated cabling,[a] iSCSI can be run over long distances using existing network infrastructure.
Source:
• https://en.wikipedia.org/wiki/ISCSI
• http://windowsitpro.com/storage/example-how-configure-iscsi-storage
• https://blogs.technet.microsoft.com/filecab/2012/05/21/introduction-of-iscsi-target-in-windows-server-2012/
• https://www.aiotestking.com/microsoft/you-need-to-ensure-that-server1-can-provide-iscsi-storage-for-server2-and-server3/
• http://techgenix.com/configuring-iscsi-storage-part1/ (Very helpful!) (Second paragraph)
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http://thesolving.com/server-room/how-to-create-an-iscsi-target-on-windows-server-2012/ (Very Helpful!!)
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