[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

VMware VMFS datastore LUN PSP and settings differences across different ESXi hosts ?

Posted on 2016-10-03
6
Medium Priority
?
137 Views
Last Modified: 2016-10-10
Hi All,

When I run a Powershell script that is recommended by my Hardware vendor http://www.codyhosterman.com/2016/05/updated-flasharray-vmware-best-practices-powercli-scripts/ I get the eblow strange result in my ESXi hosts:

DRS Cluster: Production - II (PRODESXi14)

NAA                                  PSP               PathCount IOPSValue ATSMode
---                                  ---               --------- --------- -------
naa.624a937095607650b5eaec0800011025 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011026 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011027 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011028 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec0800011029 MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec080001102a MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec080001102b MostRecentlyUsed* 4         N/A       N/A    
naa.624a937095607650b5eaec080001102c MostRecentlyUsed* 4         N/A       N/A    

Open in new window



and this is from the other ESXi hosts (PRODESXi08)  in the same DRS cluster as above:

NAA                                  PSP        PathCount IOPSValue ATSMode
---                                  ---        --------- --------- ------- 
naa.624a937095607650b5eaec0800011025 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011026 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011027 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011028 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec0800011029 RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001001f RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001102a RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001102b RoundRobin 4         1000*     N/A    
naa.624a937095607650b5eaec080001102c RoundRobin 4         1000*     N/A    

Open in new window


My question is that:

1. Do I need to standardize the PSP policy for the same VMFS data store accessed by all different ESXi hosts ? or is it there for a reason ?
2. What is the best way of doing it without impacting the production VM server running on the host and the VMFS data store ?  

Any help and suggestion would be greatly appreciated.

Thanks.
0
Comment
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 3
6 Comments
 
LVL 123

Accepted Solution

by:
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 41827532
1. Do I need to standardize the PSP policy for the same VMFS data store accessed by all different ESXi hosts ? or is it there for a reason ?

Yes, usually based on vendor recommendations as to what works best for your SAN.

2. What is the best way of doing it without impacting the production VM server running on the host and the VMFS data store ?

Migrate the VMs off the datastore using Storage vMotion.
0
 
LVL 8

Author Comment

by:Senior IT System Engineer
ID: 41827535
Thanks Andrew,

Is there any outage or problem when I set the PSP in one VMFS on one ESXi host ?
0
 
LVL 123

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 2000 total points
ID: 41827545
There should not be an outage, but we would always ensure, no VMs are present just in case, a storage glitch appears.
0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 8

Author Comment

by:Senior IT System Engineer
ID: 41827551
OK so just Vmotion of the VM from the ESXi host is enough ?

No need svmotion ?
0
 
LVL 123
ID: 41827668
To move VMs from the datastore, you would need to use Storage vMotion, or turn off the VM.
1
 
LVL 8

Author Closing Comment

by:Senior IT System Engineer
ID: 41837872
Thanks !
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

We look at whether swapping a controller board on a failed hard drive is likely to solve the problem.
August and September have been big months for VMware—from VMworld last month to our new Course of the Month in VMware Professional - Data Center Virtualization. We reached out to Andrew Hancock, resident VMware vExpert, to have a more in-depth discu…
Teach the user how to configure vSphere Replication and how to protect and recover VMs Open vSphere Web Client: Verify vsphere Replication is enabled: Enable vSphere Replication for a virtual machine: Verify replicated VM is created: Recover replica…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an antispam), the admini…

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question