frankdenneman

  Frank Denneman is the Machine Learning Chief Technologist at VMware. He is an author of the vSphere host and clustering deep dive series, as well as podcast host for the Unexplored Territory podcast. You can follow him on Twitter @frankdenneman

     



440 Stories by frankdenneman

Connecting multiple DRS clusters to a single Storage DRS datastore cluster.

Recently I received the question if you can connect multiple compute (HA and DRS) clusters to a single Storage DRS datastore cluster and specifically...
2 min read

I/O Analyzer v1.1

I/O Analyzer v1.1 is now live on the Flings site: http://labs.vmware.com/flings/io-analyzer I/O Analyzer is a virtual appliance tool for measuring storage performance. This version...
20 sec read

Impact of Intra VM affinity rules on Storage DRS

By default Storage DRS applies an Intra-VM affinity rule to all new virtual machines in the datastore cluster. The Intra-VM affinity rule keeps the...
3 min read

Storage DRS I/O load balancing and Array-based Auto-Tiering

In its basic form Storage DRS can be used together with any array, however there are a few combinations of Storage array features and...
2 min read

(Storage) DRS (anti-) affinity rule types and HA interoperability

Lately I have received many questions about the interoperability between HA and affinity rules of DRS and Storage DRS. I’ve created a table listing...
1 min read

Retrospect of 2011 content due to Bloggers survey

vSphere-land.com is running it’s annual Top 25 virtualization blog survey again and I’m really interested to see who are picked this year. Like previous...
58 sec read

Storage DRS initial placement and datastore cluster defragmentation

Recently an interesting question was raised about what happens if enough free space is available in the datastore cluster but not enough space is...
4 min read

Storage DRS and Multi-extents datastores

Somebody asked me if VMFS3 multi-extents datastores are supported by Storage DRS. Although they are supported and fully operational in Storage DRS, one must...
1 min read

vSphere 4.1 HA and DRS book for only $19.95

We lowered the price of the vSphere 4.1 HA and DRS technical Deepdive book permanently. As of this week you can obtain one of...
1 min read

Impact of load balancing on datastore cluster configuration

This article is a part of the series on architecture and design on datastore clusters. This article zooms in on why it’s recommended to...
3 min read