Errors on Hardware of a Virtual box

WellingtonIS
WellingtonIS used Ask the Experts™
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I'm running a server with ESXI 6.0 I'm having issues with the box - it's slow and my virtual servers are freezing.  I went to hardware and looked at health and saw the following - see attached.  How can I verify this is the issue.  I have ssh enabled but I don't know how to see if I'm actually having hardware issues.a.pngb.png
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Lets start with basics.....there are no red warning flags in those screenshots.

You have not updates the host in 3.5 years, latest build is Build 14513180, which is 25 patches behind!!!!

when did it start ?

what are the issues ?

what is the make and model of server ?

what is the CPU?

what is the Memory ?

What is the total CPU and Memory usage used by VMs ?

Author

Commented:
Issues are as follows:
a) slow machines
b) machines freezing
c) If I try to install another VM its very slow to load and updates on the existing boxes are slow too.
You want the total memory of the box and CPU - Memory = 160.4 mb  CPUs - 16 logical processors 8 Cores per sockets and 2 Processor Sockets.
1 box has 20 gigs memory and 4 CPUs this is the box with the most issues
1 box has 4 gig and 4 cpus
1 box has 10 gigs and 4 cpus
Top Expert 2016

Commented:
It is usually slow storage.. you could have a failed drive or replaced a drive and the raid is rebuilding. This is just a wild a$$ guess. There are hundreds of reasons for slow downs.
The screenshots all say NORMAL
Define slow?  What do these virtual machines do? are they disk intensive, cpu intensive, network intensive?  If you shut down 1 vm do the other 3 rapidly speed up? You are there.
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Could you send me screenshots of the Summary. (CPU and Memory).

The 20Gig and 4 CPU does what ?

Do you backup the VMs >?

Author

Commented:
Here a Screen shot:
And I backup the servers
summary.png
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Okay, CPU and Memory do not look over-subscribbed.

Do you backup VMs ?

The VMs are not running on snapshots ?

What product do you use ?

Author

Commented:
I use Veeam to back things up.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Okay, please check all VMs for snapshots.

Author

Commented:
Im not sure I understand.  I backup nightly with Veeam and it's successful.
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
But if the VMs are left writing to a snapshot, you'll have performance issues.

Please check, and you probably want to have a read of my EE Article

HOW TO: VMware Snapshots :- Be Patient

Author

Commented:
OK that looks like the issue but is there a way to stop it?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
No, you need to check after every backup as part of your VMware Administration, or setup alarms, scripts etc

It's a fact of VMware vSphere life, that you need to prepare for, not only can performance be affected, but if you do not check for snapshots, the datastore can become full, and the virtual machines will fail and not start, and can get corrupted and data will be lost.

Welcome to Snapshot Hell!

Author

Commented:
Thanks much for the answer, just one more question... Does it keep overwriting or does it create new files.  I'm afraid if I delete it I will destroy my VM server.
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
You *MUST* follow the guidance in my article correctly, and Delete the Snapshots via the Interface, and do not just delete files.

Every backup creates a new snapshot files...

Author

Commented:
OK that just it how do I start the deletion process???  Ok so in your picture I'd deleted the Xenapp
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
Before you start the process, did you read my EE Article, and understand it ?

BEFORE you pull the trigger on deleting the snapshots.....????

Author

Commented:
So in your picture I'd delete the Xenappdeploy#1 or would it be better to consolidate it?
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
1. Take a new snapshot.
2. Wait 120 seconds.
3. Select DELETE ALL.

and wait and be patient.....it could take seconds, minutes, hours or days, weeks based on the size and how many snapshots....

once you click Delete ALL, do no stop, cancel, restart the host, or VM... Be Patient and wait it will complete!

Do not meddle, do not watch it walk away and grab a cup of coffee!

During a Deletion Performance may get worse on he host and VMs, and cause service impact!

Author

Commented:
OK thanks much!
Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
np

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