How to do LUN Deallocation in Symmetrix DMX | How to do LUN Deallocation in DMX | Steps to do for LUN Deallocation in Symmetrix

LUN De-allocation


Hello Guys,

Today we will let you know about the LUN deallocation procedure in Symmetrix DMX. To know about LUN Provisioning in DMX, refer this link below
http://www.sanadmin.net/2016/04/Symmetrix-lun-provisioning.html
Symmetrix DMX LUN Deallocation

Steps:

Below are the 5 simple steps to perform the LUN deallocation in Symmetrix DMX.

1. Unmasking
2. Write disable
3. Un-mapping
4. Dissolve meta
5. Deleting hypers


Procedure:


1. Unmasking devices from the host, by using the below command

Symmaskdb –sid XXX –wwn 10000003efgae62 –dir 6d – p 1 remove devs 27CA

Refresh the symmetrix array, by using the command

Symmask –sid XXX –refresh


2. Write disable the device before unmapping from the director port, by using the below command

Symdev –sid XXX write –disable 27CA –sa 6d –p 1 –noprompt

3. Open a text file to unmap the devices, by using the command

Unmap dev 27CA from dir all;all

Perform preview, prepare and commit operations using symconfigure command

Symconfigure –sid XXX –f "name of the text file" –v –nop preview


Symconfigure -sid XXX -f "name of the text file" -v -noprompt prepare

Symconfigure -sid XXX -f "name of the text file" -v -noprompt commit

Verify that the device has been unmapped or not, by using the below command

Symdev –sid XXX list –noport

4. Open a text file to dissolve the meta head, by using the command

Dissolve meta dev 27CA;


Perform preview, prepare and commit operations using symconfigure command

Symconfigure –sid XXX –f "name of the text file" –v –nop preview


Symconfigure -sid XXX -f "name of the text file" -v -noprompt prepare

Symconfigure -sid XXX -f "name of the text file" -v -noprompt commit

Verify that the meta has been dissolve.

Symdev –sid XXX list –noport

5. Open a text file to delete the device, by using the command

Delete dev 27CA;

Perform preview, prepare and commit operations using symconfigure command

Symconfigure –sid XXX –f "name of the text file" –v –nop preview


Symconfigure -sid XXX -f "name of the text file" -v -noprompt prepare

Symconfigure -sid XXX -f "name of the text file" -v -noprompt commit

Verify that hypers have been deleted.

Symdev –sid XXX list - noport


EMC Storage Product list detailed are mentioned, to know more details about FC SAN Switch installation procedure, click the link below

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