Solved

Vmware Datastore Free Space Threshold

Posted on 2010-08-19
2
1,207 Views
Last Modified: 2013-11-14
We are running vshere 4 with nfs and iscsi datastores on an emc san.  The problem I am having is that the thresholds that vmware has seems strange.  On one datastore when it get to 91gig free vmware will pause the vm's complaining about free space.  On another it started pausing vm's with around 200gig free.  Where is this setting at?  And how could have the settings been so messed up?  I was thinking this happened before on 3.5 and it wouldnt start pausing vm's untill there were only a few meg's left.
0
Comment
Question by:LSB-IT
2 Comments
 
LVL 28

Accepted Solution

by:
bgoering earned 250 total points
ID: 33478719
The alarm is defined at the vCenter server level. Select your vCenter Server, go to Home - Inventory - Datastores, click the alarms tab - then the definitions button. From there you can right click the alarm and modify the settings.

Defaults are 75% utilized Warning and 85% utilized Alert. You can adjust the conditions there, You can also create alarms for amount overcommitted.

Unfortunately I don't see any way to specify specific Less than x GB free, it is a percentage of utilization.

Good Luck
0
 
LVL 42

Expert Comment

by:paulsolov
ID: 33480245
You really want to keep the warning of at least 10%.  This is because vmware swap file gets created during a vm startup.  Lets say you create a VM with 4GB RAM and you don't give a memory reservation.  Next thing you know it creates a 4GB swap file on the datastore and if you have 3.8GB left it runs out of space..  Just an example.
0

Featured Post

Simplifying Server Workload Migrations

This use case outlines the migration challenges that organizations face and how the Acronis AnyData Engine supports physical-to-physical (P2P), physical-to-virtual (P2V), virtual to physical (V2P), and cross-virtual (V2V) migration scenarios to address these challenges.

Question has a verified solution.

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

Finding original email is quite difficult due to their duplicates. From this article, you will come to know why multiple duplicates of same emails appear and how to delete duplicate emails from Outlook securely and instantly while vital emails remai…
When we purchase storage, we typically are advertised storage of 500GB, 1TB, 2TB and so on. However, when you actually install it into your computer, your 500GB HDD will actually show up as 465GB. Why? It has to do with the way people and computers…
Teach the user how to use configure the vCenter Server storage filters Open vSphere Web Client:  Navigate to vCenter Server Advanced Settings: Add the four vCenter Server storage filters: Review the advanced settings: Modify the values of the four v…
Teach the user how to join ESXi hosts to Active Directory domains Open vSphere Client: Join ESXi host to AD domain: Verify ESXi computer account in AD: Configure permissions for domain user in ESXi: Test domain user login to ESXi host:

830 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