Some time ago I wrote a posting on how to use vscsiStats to gather even more data from your VMs and their SCSI performance ( See: Using vscsiStats – the full how-to). Last week I received an e-mail from Paul Dunn who had written an Excel macro that can read the output from the vscsiStats […]
ESX
Homelab for VCP and VCDX
If you want to study for your VCP or VCDX exams, you really need a lab in which you can test what the study material is talking about. Hopefully you have a test environment at work that you can use, but if not, this blog post will help you put together your own homelab. Before […]
Putting your storage to the test – Part 2 NFS on Iomega IX4-200D
After performing the tests with iSCSI and discussing the results with a friend of mine, I was a little disappointed as it seemed that the IX4 didn’t seem to perform as well as his system. Biggest difference between my IX4 and his NAS was the use of iSCSI on the IX4 and NFS on his. […]
Memory overcommit in production? YES YES YES
There was a good discussion on twitter on memory overcommit and the value of memory overcommit and whether you should or should not use it in production. What struck me in this was that on a subject like this, there is so much misunderstanding although there is a lot of documentation available that can explain […]
Putting your storage to the test – Part 1 iSCSI on Iomega IX4-200D
Putting your storage to the test Doesn’t everybody want to brag about how fast their storage is? How they configured and tweaked for hours to squeeze the last bit of IO out of their storage? But what does it mean when someone says: “My box can do 1200 IOPSâ€. Is that read speed, write speed, […]