The last time we touched upon LUN resigning, it was during an odd hour of the night. Looking back now, some interesting VMware KB articles have cropped up around this very topic.
First there is KB 9453805, which covers this process for VI3, seemingly from top to bottom, it also greatly expands on my post, [...]
If you are looking for a detailed explanation of the features and enhancements to the storage stacks in ESX 4 as well as the differences between storage in ESX 3.5 and 4.0, the following presentation has what you are looking for:
Vmug V Sphere Storage (Rev E)
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vSphere Storage: Features and Enhancements
This [...]
Now that I have you at attention, let us take this time to talk of things. Important things. The things your parents never told you about VMFS. First let us start with some definitions, each of these will be taken in the context of VMware Virtualization using ESX/vSphere, and VMFS, but you knew that, didn’t [...]
Interesting indeed. Scott Lowe & Mr. Brambley already did an excellent write up, so I’ll spare you more boring reading. However, this opens up some further cool uses for VMFS.
“This driver enables read-only access to files and folders on partitions formatted in the Virtual Machine File System (VMFS) by VMware. VMFS is a clustered file [...]
Well, it started at midnight, a standard hardware upgrade really. Power down the VM’s, shut down the host, and call the DC team to do their thing. Twenty minutes later, got a ring from the DC, that the upgrade had been completed.
I popped open the VC, and well, there was no local storage. It was [...]
Using extents gives you flexibility with your volumes and adding extents is a very simple and usually painless process. The ability to dynamically increase your total storage for a single VMFS volume is a feature we all love, but how many of us actually use it? Is it worth the risk?
Are you running extents for [...]
Time for a new series! Are you as excited and motivated as I am? In this series we’ll cover the Tops and Bottoms of VMware disk types. What are they, how do you make them, what are the benefits and drawbacks, and when would you use them. A lot to cover? Sure IS, but that [...]
Many of you will say “RAID 5, of course!” and for those of you that do I would like to ask why? Is it because you really understand the differences between the different RAID levels? Granted that you may but have you ever had to do a RAID rebuild of a RAID 5 volume? How [...]
Mr. Epping over at Yellow-Bricks posted this on VMFS3 Heap Size. I’m reposting here for future reference.
I was talking to a fellow consultant today. He ran into the following error messages at one of his customer sites:
vmkernel: 8:18:59:58.640 cpu2:1410)WARNING: Heap: 1370: Heap_Align(vmfs3, 4096/4096 bytes, 4 align) failed. caller: 0×8fdbd0 vmkernel: [...]
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