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How can I switch from IET to SCST protocol for my iSCSI targets that are mounted to VMware 3.5 and 4.0?

Article ID: 882
Last updated: 10 Nov, 2009
Views: 6638
How can I switch from IET to SCST protocol for my iSCSI targets that are mounted to VMware 3.5 and 4.0? Rating: 3.0000 / 10
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Posted: 10 Nov, 2009
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Updated: 10 Nov, 2009
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Problem:
I was using DSS V5 with IET protocol for my iSCSI targets that are mounted to my VMware 3.5. I upgraded to DSS V6 but as explained in http://www.kb.open-e.com/entry/672/   I could not see the targets unless I switch back to IET . But I would like to use the SCST protocol, how can I switch to SCST?
Solution:
When switching over from IET to SCST iSCSI Targets either from upgrading to DSS V5 to DSS V6 or existing IET iSCSI Targets to using the new SCST for your Targets and seeing them in VMware to use after switching over. Below are instructions for both ESX 3.5 and ESX 4.0.
 
This set of instructions provided by VMware will work but only for ESX 3.0 and 3.5 and not for ESX 4.0.
Please go to VMware’s KB to read the instructions on how to recreate signatures on iSCSI storage under ESX 3.0/3.5:
 
 
In ESX 4.0 there is no setup for LVM in the advanced settings.
 
This set of instructions provided by VMware are the step by step instructions on how to recreate the signature on the iSCSI storage in Esx 4.0:
 
It is possible to do this in 2 ways first using Maintenance Mode and not using it, if not using MM skip steps 2 and 5:
 
1. Log on to the ESX host with VMware Infrastructure (VI) Client
  - remove your VMs from inventory we will add them later
2. Go into maintenance mode
  - From top menu bar select Inventory
  - then select Host
  - finally click on the Enter Maintenance Mode
  - when the pop-up will appear click yes
3. Then Click the Configuration tab
  - Go to Storage Adapters
  - Then Rescan (it will take some time about 1-5 min) it is possible that you will have to rescan 3 or 4 times before the iscsi disk will appear
4. Go to Storage
  - Click Add Storage
  - Window will appear, select Disk/LUN and then click Next
  - You will see your old storage, select this and click next (If field will be empty wait up to 1min to see storage)
  - Now you will have three options to choose, select Assign new
signature and click Next
  - Additional info will be displayed, click next
  - And Finish
  - To see the iscsi disk click refresh or wait about 30 seconds
5. To add Virtual Machines that was removed you must exit maintenance mode:
  - From top menu bar select Inventory
  - then select Host
  - finally click on the Exit Maintenance Mode
6. Virtual Machines
  - From tabs click on Virtual Machines
  - On the screen right click and select New Virtual Machine
  - Select Custom (in order to be able to add old VM) and Next
  - Enter name and then click Next
  - Select old storage and then click Next
  - We are assuming you know how to add the VM so we will skip the next few steps
  - When you reach to the section of Select a Disk you must select Use an existing virtual disk and click Next
  - Then select your VM from storage and click Next
  - In Advance Options you should use suggested selections and click Next
  - And Finish

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