Unsolved
This post is more than 5 years old
10 Posts
0
2266
August 7th, 2013 05:00
New VNX5300 Install, VMware Multipathing Selection
Hello,
I am installing a second VNX5300 at our other location and setup our ESXi 5.1 hosts to connect for storage. I am verifying the multipathing policy in vCenter for the LUNS and the drop-down for where you would select Round-Robin or Fixed is blank...no options are available. Any suggestings why this is happening. Our first array we are able to select the policy option.
sjk-tampabaywat
10 Posts
0
August 7th, 2013 07:00
Looking at Hosts>Initiators>Failover Mode is 4. Assuming that is what you are asking?
dynamox
9 Legend
•
20.4K Posts
0
August 7th, 2013 07:00
on VNX did it auto-register using failover mode 4 ?
christopher_ime
4 Operator
•
2K Posts
0
August 9th, 2013 23:00
I am going to assume that you have PowerPath/VE installed.
sureshacs
1 Rookie
•
95 Posts
0
August 13th, 2013 09:00
With ESXI 5x It will be round robin if using Native MPIO , so will will see IO going on all the paths ., with AULA as FM 4 like some one mentioned.
christopher_ime
4 Operator
•
2K Posts
0
August 14th, 2013 01:00
It is blank for him though. That is expected if you have PowerPath/VE claiming the devices.
o17Uu33DCF12520
4 Operator
•
1.1K Posts
0
August 14th, 2013 01:00
When you start your ESXi host or rescan your storage adapter, the host discovers all physical paths to storage devices available to the host. Based on a set of claim rules, the host determines which multipathing plug-in (MPP) should claim the paths to a particular device and become responsible for managing the multipathing support for the device. This continues until all physical paths are claimed by corresponding MPPs, either third-party multipathing plug-ins, such as PowerPath or the native multipathing plug-in (NMP).
For the paths managed by the NMP module, a second set of claim rules is applied. These rules determine which Storage Array Type Plug-In (SATP) should be used to manage the failover paths for a specific array type, and which Path Selection Plug-In (PSP) is to be used for each storage device path selection.
For the paths managed by PowerPath, all the claim rules are controlled by PP. And PSP and SATP would be unavailable consequently.
On your screenshot, the PSP and SATP are all unset, so I think we need to first figure out what MPP are owning these paths. Check on your vSphere client referring to below illustration.
christopher_ime
4 Operator
•
2K Posts
0
August 14th, 2013 02:00
Agreed. However, if you right click on the LUN you have circled and select "Manage Paths", you will see the same thing as the op.
o17Uu33DCF12520
4 Operator
•
1.1K Posts
0
August 14th, 2013 18:00
sjk, hi, have you checked out the path owner?
The_Special_One
18 Posts
0
August 15th, 2013 00:00
As far as I know, EMC Best practices for ESX multipathing says that Fixed mode (setting Preferred path) should be set with Failover Mode 4 (ALUA).
Visit my blog http://storagetricks.blogspot.com
o17Uu33DCF12520
4 Operator
•
1.1K Posts
0
August 19th, 2013 00:00
sjksjk
Please help to mark my answer as "correct/helpful answer" if it helps.