VMware Staff engineer Sivaprasad Govindankutty has produced a very detailed technical white paper that provides a thorough understanding of how the content-based read cache (CBRC)
functions with vSphere 5.0, and how it is integrated in VMware View 5.1. It will also provide a detailed explanation of configuring View Storage Accelerator (also known as Host Caching) for View desktops.
Sivaprasad goes into details about CBRC design covering topics like the VSCSI Filter implementation, Digest files, Journaling and CBRC parameters. The paper is a MUSR READ.
The paper is available at ttp://www.vmware.com/resources/techresources/10334
This article was first published by Andre Leibovici (@andreleibovici) at myvirtualcloud.net.
3 comments
Eero
11/13/2012 at 3:20 am (UTC -7) Link to this comment
Hi Andre
I was wondering is there any recommendation regarding how many pools Host Caching will support? When does the 2 GB become too small amount?
Thanks,
Eero
Andre Leibovici
11/13/2012 at 5:11 pm (UTC -7) Link to this comment
@Eero
The 2GB number resonates with all performance tests carried across a host. Doesn’t matter how many desktops. In regards to replicas I have never seen a number for that. However, most windows images carry the same content with exception to few applications. Even blocks from different replicas that have the same content will be collapsed and served from RAM.
Andre
Eero
11/14/2012 at 2:14 am (UTC -7) Link to this comment
@Andre Leibovici
Thanks for the reply. I will enable it for 5 pools now instead of 2 currently.