Today playing in my lab I had an issue running some VMs on a SSD. It turns out the Host Cache Configuration was causing some issues running the VMs on the same SSD. You enable host cache when creating a datastore on a SSD, but how do you disable it? Its not an option on the datastore properties.
To disable Host Cache Configuration follow the steps below:
- Select Configuration Tab
- Select Host Cache Configuration under software
- Right Click on the SSD Datastore and Select Properties
- Disable Checkbox for Allocate space for host cache
- Click OK
- DONE!!
Thats it, host cache has been disabled.
Hi David,
What issues were you seeing with running vm’s on the same ssd on which you have the esxi host cache? I thought this was a common practice in homelabs..?
Great blog..!
Strangely, performance was terrible. 15 minutes to login to a W2k8 server. Once host cache was disabled, everything ran like a dream…
Thanks,
Did you ever find out why this happened? I was under the impression that it should be possible to use both on a SSD..
No, never found out. I also expected it to work. I know of other people who have this feature enabled with no issues.
Thanks for this, I needed to type up some instructions but did not have a system with host cache enabled to test!