Mapping SAN volume via fibre channel to hosts

LuiLui77
LuiLui77 used Ask the Experts™
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Hello,

I remember about being exposed to a fibre channel SAN in the past but I don't recall the details.

I know that each host needs to have a hba (host bus adapter) card installed and that the volumes were made available to the hosts via a WWPN (WorldWide port number). Can someone help me refresh my mind and answer a couple of questions:
- Where was the WWPN inserted? in the SAN console?
- What was the device that actually assigns the host with the WWPN? Is it the fibre switch that interconnects the SAN and the hosts?
- In a Windows server, is there further configuration to be performed to be able to see the volume in disk management? like with iSCSI initiator (configure the discovery interface, connect to the target, etc)
- Is there further configuration to be made to present the volume on a ESXi host?
- Can you give me a combination of devices (brands and models) that I can use to implement a SAN infrastructure (hba, fibre switch, SAN fibre channel)?

Thank you!
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Manager - Infrastructure:  Information Technology
Commented:
In order to assign a LUN from a fiber channel SAN to a host, the following needs to be performed:

1.  In most cases, the hosts will be connected to a switch as well as the SAN will be connected to the switch.  In some cases, the SANs do come with a built-in 4 or 8 port switch where you will connect the host to
2.  You go to the switch configuration and create a zone.  A zone is fancy name where you assign which devices could see  what.  In the case of an external switch, you create an alias for the SAN and one for each host.  You will then create a zone adding aliases (devices) which you want to see each other
3.  In case of an external switch, you will be creating the hosts on the SAN also.  If the SAN has built-in switch, you just create the host using WWN
4.  Finally you create your LUN, assign it a SCSI ID and then assign it to the host you want

If you have a Windows server, all you need is the driver for your HBA and Windows will see the drives just like built-in drives.  You might also need MPIO (Multi-Path IO) drivers as with SANs installation, there are multiple paths (redundancy) and without MPIO, a single drive might show multiple times.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
Where was the WWPN inserted? in the SAN console?
You will need the WWNN, in the SAN configuration, and also you will need these with your Switch Fabric.

What was the device that actually assigns the host with the WWPN? Is it the fibre switch that interconnects the SAN and the hosts?

see above

- In a Windows server, is there further configuration to be performed to be able to see the volume in disk management? like with iSCSI initiator (configure the discovery interface, connect to the target, etc)

Other than Re-scan in disk management the volumes will appear, and then you assign a disk letter, and format the FC LUN with NTFS

- Is there further configuration to be made to present the volume on a ESXi host?
-

Click Add Datastore, and follow the wizard, to format the LUN, ansd create a datastore label.


Can you give me a combination of devices (brands and models) that I can use to implement a SAN infrastructure (hba, fibre switch, SAN fibre channel)?

NetApp, Brocade, IBM, Tegile, HP

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Commented:
Thanks Gentlemen!

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