Fibre channel san part 2 zoning and lun masking video tutorial it was really good learning for me, everything was very easy to understand and fun as it was direct to the point. World wide number wwn wwns are unique identifies used in storage techonologies fibre channel etc as world wide node name wwnnto identify a host or as a world wide port name wwpn to identify a port on host logical unit number lun a lun is a number used to identify a device accessed by using the scsi protocol. A logical unit number lun is a unique identifier for designating an individual or collection of physical or virtual storage devices that execute inputoutput io commands with a host computer, as defined by the small system computer interface scsi. View and download qlogic sanblade qla2344 specifications online. Lun mapping is typically done at the storage system level. The lun table maps the i0 requests to unique locations within the storage device. This webcast and a pdf of the slides will be posted to the snia ethernet storage forum esf.
By doing zoning and lun masking storage units are isolated or made invisible to some or all of the hosts in the san. Lun masking is used to define the lun access rights for a connected iscsi initiator. Lun masking implemented at this level is vulnerable to any attack that compromises the hba. Host mapping is similar in concept to logical unit number lun mapping or masking. Learn how to create a lun, how to share a lun, and find out about lun provisioning and lun masking. A lun may be used with any device which supports readwrite operations, such as a tape drive, but is most. The security benefits of lun masking implemented at hbas are limited, since with many hbas it is possible to forge source addresses wwns macs ips and.
However, of course, each host has its own luns and lun ids, and the luns and lun ids of each host are independent of the luns and lun ids of all other hosts. Logical unit number masking or lun masking is an authorization process that makes a logical. Lun masking is a level of security that makes a lun available to only selected hosts and unavailable to all others. A physical disk is a logical unit number lun presented to the operating system by a hardware controller. How to perform lun masking in esxi host dtechinspiration. Vmware esx server can be used in conjunction with a san storage area. Jan 27, 2014 the main purpose of lun masking is preventing access to luns from some specific hosts, a way of protection against data loss. As a feature of storage virtualization sv, lun masking has numerous customer benefits such as security and configurable lun. Lun masking is a process that makes a logical unit number available to some hosts and unavailable to other hosts. Navisphere analyzer provides detailed realtime and historical performance information about your dell emc array, allowing you to investigate performance patterns and trends before problems occur. The lun id is the means by which a host identifies a lun and distinguishes between multiple luns. Some storage controllers are also compatible with lun masking.
There is a document called san fundamentals how fibre channel san s are built, secured and managed, written by tim thomas, i cant remember where i got this exactly but i think it was on the partner web site and i think the swin number is 426800. San zoning may be utilized to implement compartmentalization of data for security purposes. A vios or a lun mapping masking san are not required. Explore logical unit number lun storage and its role in san management. The lun masking setup will determine which wwn host bus adapter will be able to access a virtual disk or sets of virtual disks vdisks.
Lun masking takes place at either the host bus adapter hba or storage controller, and restricts the. Devices which belong to a certain group can be seen by the host initiators of the group. In effect, it presents a virtual storage system to each host. Masking and zoning san resources you can use zoning and lun masking to segregate san activity and restrict access to storage devices. Lun mapping is the process of controlling which hosts have access to specific logical units lus within the disk controllers. Lun masking storage array and esxi in vmware vsphere vmworld mikrotik, ubnt, tp link cisco, netis, totolink pf sense, virtual box,software hardware enough and more follw my video and easy. Lun masking is mainly implemented at the host bus adapter hba. The correct way to set up the network access configuration in openfiler is to use each esxi hosts ip address and a 32 subnet mask, specifying an. But it takes 5 minutes googling to understand that the main difference is that zoning is configured on a san switch on a port basis or wwn and masking is a storage feature with lun granularity. Logical unit number lunmasking, hosttoarray mapping and cli scripting, which were formerly offered in separate products. Lun logical unit number masking is an authorization process that makes a lun available to some hosts and unavailable to other hosts.
You can set up the following lun access rights for each connected initiators. Storage area network san technology offers it departments the ability to connect multiple. Dec 22, 2011 although you can present an openfiler lun to an entire subnet, such as 172. Lun masking is an integral part of host lun presentation along with lun mapping. A lun table enables logical unit number lun mappingmasking within an inputoutput virtualization iov adapter included in a serial attached small computer system interface sas or serial attached scsi. Lets take a look at how the san components will interact with each other. Lun masking is implemented primarily at the hba host bus adapter level. For example, you might manage zones e for testing independently within the san so they do not interfere with activity. Lun masking is mainly implemented at the host bus adapter hba level. Use lun masking when using the isns discovery method. Lun masking is an authorization process that makes a lun available to some hosts and unavailable to other hosts. View and download qlogic qla2500 software manual online. Hi, lun masking is a level of security that makes a lun available to only selected hosts and unavailable to all others. Lun masking is important because windows based servers attempt to write volume labels to all available luns.
Lun masking explained zoning and masking terms are often confused by those who just started working with san. Lun masking is applied primarily at the hba host bus adapter level. Clint huffman, in windows performance analysis field guide, 2015. A device can belong to multiple lun masking groups, but a host initiator can belong to only one lun masking group. In this video i cover fibre channel security through the use of zoning on the fabric switches, and lun masking on the storage system. Neil is very responsive and replies to your issues as soon as he can. Lun masking for the xiv system is storagebased port mapping. By masking the lun you prevent multiple hosts writing data to the same lun which has the.
Storage zoning vs lun masking online computer tips. Lun masking it is an process that makes a lun available to some hosts and unavailable to other hosts. You can protect access to storage in your vsphere environment by using zoning and lun masking with your san resources. This may be used more to keep a misbehaving server from accessing a lun that it doesnt need access to. Nov 15, 2016 this post will be an extension of the vcap6dcv objective 2. This post will be an extension of the vcap6dcv objective 2. If you do not want this initiator to access this target and the associated luns, you must use lun masking. Join rick crisci for an indepth discussion in this video, lun masking, part of vmware vsphere 6. Qlogic sanblade qla2344 specifications pdf download. The two predominant san types are fibre channel and iscsi. Which is a better fit for a storage area network san fabric. The iov adapter includes one or more virtual functions vf, a physical function pf. Allocate a lun maskingmapping in assign luns to hosts, device manager, hcs, lun operations allocating a lun its the process where you present a carved lun to a host or to more hosts if you have a cluster for example.
How to configure iscsi advanced acl on qnap turbo nas. Mar 11, 2016 how to perform lun masking in esxi host march 11, 2016 sandeepkaushik and shaswatimukherjee vmware 0 normally lun masking is done by storage admin at storage level. In a physical fibre channel san environment, lun security is typically accomplished through a combination of lun masking and zoning. If the storage doesnt allow visibility of the lun to a particular host then it doesnt even exist as far as the host is concerned. Active management smis enables control over storage devices in the san lun masking and mapping ability to manipulate the access control to array volumes luns from host fc ports lun creation and pool management carve volumes from undifferentiated storage. Find answers to ibm san what is lun masking from the expert community at experts exchange. Lun masking controls lun visibility on a per host basis. Dec 16, 2017 lun masking lun masking is the process of masking or hiding luns from hosts that shouldnt see them or have access to them. Lun masking lun masking is the process of masking or hiding luns from hosts that shouldnt see them or have access to them.
It also provides the most efficient utilization of the hbas in the server while ensuring the highest. Lun masking is similar to zoning in the sense that both are used to provide a way of access control. The best thing of san is to consolidate ports on storage arrays. Even though it is presented as a single physical disk, there could be one or more disk drives behind the lun. Click save changes to save your modifications and exit the lun masking configuration. A logical unit number or lun is a logical reference to entire physical disk, or a subset of a larger physical disk or disk volume or portion of a storage subsystem. Join rick crisci for an in depth discussion in this video, lun masking, part of vmware vsphere 6. San system design and deployment guide third edition may 2010. Is usually implemented in the connecting fabric and only allows devices that are in the same zone to see each other.
Readynas 2120 series network attached storage nas data sheet rn2120 page 2 of 4 readynas solutions file sharing these days, running a successful business often depends on successful file sharingapplication data, virtual images, client files, email, all the digital files that make your business go. Each device in a san may be placed into multiple zones. In computer storage, a logical unit number, or lun, is a number used to identify a logical unit, which is a device addressed by the scsi protocol or storage area network protocols which encapsulate scsi, such as fibre channel or iscsi. Use lun masking instead to ensure that only authorized initiators can access a lun. It explains a bit about lun masking and why the lun masking is done on the arrays nowadays. In order to ensure the luns assigned to a single port are accessed only by the correct host, lun masking is used. Us8122225b2 lun maskingmapping in a sriov enabled sas. Presents a virtual storage system by lun masking, luns are presented only to servers which are authorized to see them. This makes a san a feasible solution for businesses of any size. This kind of security is done on the san level and is based on the host hba, i. Lun masking the process of configuring software in san nodes to determine which hosts have access to exported drives volumes. Once the zoning is done, we can further lock down access to the storage by setting up lun logical unit number masking on the storage device. Lun masking is important because windows based servers attempt to write volume labels to all available lun s.
Using these approaches in a vendorrecommended way ensures that a given lun can be accessed only by a single host, as identified by the world wide names wwn of its hbas. Working with lun masking groups for the ts7600 protectier. For example when a host running windows operating system is connected to san, windows may try to assign volume labels to the luns by writing header information. I0 latency, processor overhead and storage cost are improved over prior lun mapping masking solutions.
San zoning is a method of arranging fibre channel devices into logical groups over the physical configuration of the fabric. Continue configuring the lun masking groups as appropriate. For example, you can assign 20 luns to a front end port, and then allow 1 host to see 10 of them and another host to see the remaining 10. This can render the lun s unusable by other operating systems and can result in data loss. Lun mapping the process of creating a disk resource and defining its external access paths by using a lun.
If an initiator is not assigned to any lun masking policy, the default policy will be applied see figure 1. The preferred configuration for san bliss is thusly. With lun masking on the storage array this is not a concern. There is a document called san fundamentals how fibre channel sans are built, secured and. Fibre channel san part 2 zoning and lun masking flackbox. How to perform lun masking in esxi host march 11, 2016 sandeepkaushik and shaswatimukherjee vmware 0 normally lun masking is done by storage admin at storage level. Getting zoning right is key to building a manageable storage network. This can render the luns unusable by other operating systems and can result in data loss. Although you can present an openfiler lun to an entire subnet, such as 172. Lun masking storage array and esxi in vmware vsphere. If you remove a target from a discovery domain while the target is in use, the iscsi initiator does not log out from this target. In computer storage, a logical unit number, or lun, is a number used to identify a logical unit, which is a device addressed by the scsi protocol or storage area network protocols which encapsulate scsi, such as fibre channel or iscsi a lun may be used with any device which supports readwrite operations, such as a tape drive, but is most often used to refer to a logical.
In the below example, consider we have client a, client b a. To remove a lun masking group, click remove at the bottom of the lun masking groups pane. The san would prevent certain devices from seeing a specific lun that it is hosting. Apr 07, 2017 lun masking storage array and esxi in vmware vsphere vmworld mikrotik, ubnt, tp link cisco, netis, totolink pf sense, virtual box,software hardware enough and more follw my video and easy. Scsibased data transfer and the lun security problem. The vmkernel will address the lun using the following example syntax. Masking and zoning san resources you can use zoning and lun. The connected initiator can only read the data from the luns. Logical unit number an overview sciencedirect topics. It was fun to listen to and the real world examples are greatly appreciated.
Masking and zoning san resources you can use zoning and. Therefore, lun that is presented to a host must be unique to the host. Lun mapping determines which luns are available in a front end port, lun masking determines which hosts can see which luns. Lun masking groups define the connection between the host initiators and the vt library devices robots or tape drives. This is significant as windowsbased servers attempt to write volume labels to all.