For you vSphere environment you always want to make sure that all paths to your storage system are connected. That is why in our vSphere environment we run a daily morning check that tells us if there are any death paths between hosts and storage. Before upgrades of our SAN or flare code upgrades of our […]
lun
[Wishlist] datastore maintenance and categories
Just a short post on some thoughts I had on improvements for VMware vSphere when I wanted to delete a datastore holding 10 VMs. Wouldn’t it be great to be able to put a datastore in maintenance mode like you can with an ESX host. When the datastore is set into maintenance mode, vCenter would […]
(Presentation) Design tips for VMware vSphere 4
Recently at the Belgium VMUG I gave a presentation in which I covered some design tips for VMware vSphere 4. I talked about some business decisions that, how boring they may seem, are crucial for your design. I covered some security requirements you should check with the security department of the organisation and of course advised good […]
Harlem shuffle with VMDKs
Today I was brainstorming with Arnim van Lieshout about how to place all VMDKs on our LUNs, because right now we are facing two problems in our environment: No balancing of IO workloads across LUNs VMDKs often don’t fit nicely into the remaining LUNs space, so we lose a lot of GBs to unused space. […]
Storage: How to size your LUNs?
I frequently read postings on different forums about what the best LUN size is and I thought I’d write a post about it on how I usually do it. First of all, there is no ideal LUN size that suites all environments. But I think there is a general calculation you can use to come […]