VNX - LUN Provisioning for a New host | LUN Provisioning in EMC Clariion

VNX LUN Provisioning for a New Host


Hello Friends,

Today I am going to explain about LUN Provisioning for a new host.

Introduction


Whenever a new server deployed in the Data Center, the platform team either it is Windows, Linux or Solaris team will contact you for the free ports on the Switch (For Example:- Cisco Switch) to connect with the Storage. 

We will login into the Switch with authorized credentials via putty.

Once logged in we check the free ports details by using the command.

Switch # sh interface brief

Note:  As a storage admin, we have to know the server HBA’s details too. According to that information we have to fetch the free ports details on the two switches for redundancy.

Will update the free ports details to the platform team, then platform team will contact the Data center folks to lay the physical cable connectivity between the new server to the switches.

Note:  The Storage ports are already connected to the switches.

Once the cable connectivity completes the platform team will inform us to do zoning.

Zoning:



Grouping of Host HBA WWPN and Storage Front End Ports WWPN to speak each other.


All the commands should be run in Configuration Mode.


SwitchName # config t (configuration terminal)


SwitchName # zone name ABC vsan 2


SwitchName – zone # member pwwn 50:06:01:60:08:60:37:fb


SwitchName – zone # member pwwn 21:00:00:24:ff:0d:fc:fb


SwitchName – zone # exist


SwitchName # zoneset name XYZ vsan 2


SwitchName – zoneset # member ABC


SwitchName – zoneset # exist


SwitchName # zoneset activate name XYZ vsan 2

Once the zoning is completed, we have to check the Initiators status by login into the Unisphere.

The procedure is as follows below:

Go to the Host Tab and select the Initiators tab.

Search for the Host for which you have done the zoning activity

Verify the Host Name, IP Address and Host HBA WWPN & WWNN No.’s.

In the Initiators window check the Registered and Logged In columns. If “YES” is there in both the columns then your zoning activity is correct and the Host is connected to the Storage Box.

If “YES” is in one column and “NO” in another column, then your zoning part is not correct. Check the zoning steps, if it correct and the issue is sustain then check the Host WWPN &WWNN and cable connectivity.


Now we have to create a New Storage Group for the New Host.

The procedure is as follows:

Go to Host Tab and select the Storage group option.

Click on the Create option to create a new storage group.

Name the storage group for your identification and hit on OK button to complete your task.

Before creating a LUN to a specified size we have to check the prerequisite like:

Check the availability of free space in the Storage Pool from where you are going to create a LUN.

If free space is not available in that specific storage pool, share the information to your Reporting Manager or to your seniors.

Now will create a LUN with the specified size

Login to the VNX Unisphere.

Go to Storage Tab and select the LUN option.

Fill all the Columns like Storage Pool, LUN Capacity, No. of LUNs to be created, Name of the LUN and specific the LUN is THICK or THIN.

And hit on OK button to complete the LUN creation task.

Now we have to add the newly created LUN to the newly created Storage Group (Masking).

In the LUN creation page, there is an option known as “ADD TO STORAGE GROUP” at the below of the page.

Click on it and a new page will open.

Two columns will be appeared in the page one is “Available Host  and “Connected Host”.

Select the New Storage Group in the available host column and click on the Right side arrow and the host will appear in the connected host column and then hot on OK button.

Inform the Platform team that the LUN has been assigned to host taking a snapshot of the page and also inform them to rescan the disks from the platform level. 

As mentioned above, these are the points to be considered before provisioning a LUN to a newly deployed server in the data center.



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