Search the VMware Knowledge Base (KB)
View by Article ID

Storing ESXi coredump and scratch partitions in vSAN (2074026)

  • 14 Ratings

Details

vSAN provides the following storage solutions for ESXi coredump and scratch partitions:
  • Assign one disk for each host. When you install vSAN on a local disk, a disk is automatically assigned to the host. Use this approach for hosts with more than 512GB of memory.
  • Use a USB or SD card and do not set scratch partitions as non-persistent. vSAN tracefiles take up space in a coredump, so a 4GB SD or USB card is sufficient to support coredumps for hosts with up to 512GB of memory rather than 1TB for hosts without vSAN.

Note: vSAN does not support having scratch log on the vSAN Datastore. For more information, see Redirecting system logs to a vSAN object causes an ESXi host lock up (2147541).

Solution

Using a USB or SD card for ESXi installations, coredump partitions, and a non-persistent scratch partitions has the following drawbacks:
  • vSAN tracefiles are stored in a virtual RAM drive that is persisted only in case of host failure. All other log files are stored in a non-persistent virtual RAM drive. 
  • Use a 4GB SD card or USB drive for coredumps on hosts with 512GB of memory and where vSAN is enabled.  
  • vSAN cannot recover tracefiles or any other log files, in case of a power loss.

Additional Information

For translated versions of this article, see:

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.

Feedback

  • 14 Ratings

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.

What can we do to improve this information? (4000 or fewer characters)




Please enter the Captcha code before clicking Submit.
  • 14 Ratings
Actions
KB: