Recent Posts

Poweron file?

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By Duncan Epping, Principal Architect. I had a question this week around what the "poweron" file is and does as someone spotted it on one of their datastores. The "poweron" file is a file that is located on the designated heartbeat data stores. The file contains the set of powered on virtual machines, this allows the Read more...

vSphere Metro Storage Cluster solutions and PDL's?

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By Duncan Epping, Principal Architect. Yesterday I wrote about HP/Lefthand joining the vSphere Metro Storage Cluster program. Today I want to inform you about something that I believe is rather important when implementing stretched cluster solutions. Hopefully all of you have read about the Permanent Device Loss (PDL) enhancements that were added to vSphere 5.0 Read more...

Lefthand joins the vSphere Metro Storage Cluster program

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By Duncan Epping, Principal Architect. HP Lefthand has just joined EMC in the vSphere Metro Storage Cluster program. HP Lefthand was the first to certify for iSCSI as reported here by HP’s virtualization and storage evangelist Calvin Zito. The HCL is now updated and contains a new section called “iSCSI Metro Cluster Storage” under “Test Configurations”. Also a brand Read more...

Technical Marketing Update 2012 – Week 17

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 17 Great white paper by Cormac Hogan on Storage Protocols. I know many of you have asked for this in the past, so I am sure you will appreciate this paper that explains the various protocols and how they interoperate with VMware. Excellent work Read more...

Technical Marketing Update 2012 – Week 16

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 16 Blog posts:  Limiting stress on storage caused by HA restarts by lowering restart concurrency? (Duncan Epping) http://bit.ly/HYCF5F Identifying Virtual Machines Affected By SvMotion / VDS Issue (William Lam) http://bit.ly/HOg56f  Identifying and fixing VMs Affected By SvMotion / VDS Issue (Alan Renouf) bit.ly/IUF570  Scripts release for Storage Read more...

Technical Marketing Update 2012 – Week 15

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 15 Blog posts:  Scripts to Extract vCloud Director Chain Length and Linked Clone Mappings (William Lam) http://bit.ly/HmoTv5  Cluster Sizes – vSphere 5 style!? (Duncan Epping) http://bit.ly/HvhGwE Auditing vMotion Migrations (William Lam) http://bit.ly/HFDnsJ  HA fails to initiate restart when a VM is being SvMotioned and on a VDS! Read more...

Technical Marketing Update 2012 – Week 14

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 14 Blog posts:  Silicon Valley VMUG – April 11th (Alan Renouf) bit.ly/H8RCr6  VMware Technical Journal, download it now! (Duncan Epping) http://bit.ly/HbJfLU  Configuring Multiple Syslog Servers for ESXi 5 (William Lam) http://bit.ly/HdD4Th  Fling: vBenchmark 1.0.1 just released (Duncan Epping) bit.ly/I2UvHP Quickly Finding Objects Using the vCloud API Query Service Read more...

Technical Marketing Update 2012 – Week 13

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 13 A short update this time, most members of the Technical Marketing group were in Palo Alto last week. I am certain though we will have a lot more posts upcoming week because of that!  Blog posts:  VASA, Profile Driven Storage & RDMs – Read more...

Technical Marketing Update 2012 – Week 12

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 12 This week I have a very cool white paper for those interested in Disaster Recovery / Distaster Avoidance. Ken Werneburg wrote an excellent comparison of the two solutions and what the advantages of each are. A highly recommended read!  Stretched Clusters and VMware Read more...

Technical Marketing Update 2012 – Week 11

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By Duncan Epping, Principal Architect. Technical Marketing Update 2012 – Week 11 – #tmupdate No white paper updates this week, but I promise there will be some really cool papers coming up soon. Nevertheless, the blog posts below are worth checking out… although I suspect that many of you are know upgrading your home-labs or Read more...