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VMDK-RDM Virtual DiskRSS

VMware Virtual Machine Disk Files and Mangement

PowerCLI Find out Frame and LUN ID for VM RDM's from a Symmetrix/vMax Array.

Summary:I was looking for a way to translate RDM info into a simple frame and SCSI ID.  I took my Naa.ID script and modified to look @ it in this way.  RDM's are needed for EMC based management tools, that's pretty much the only reason I us ...
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Match Windows disk drive mapping to virtual machine SCSI controller settings (2051606)

This article explains the relationship between the virtual device node of a virtual machine and Windows drive mapping.

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Hot-Extending Large VMDKs in vSphere 5.5

n my recent post about the new large 64TB VMDKs available in vSphere 5.5, I mentioned that one could not hot-extend a VMDK (i.e. grow the VMDK while the VM is powered on) to the new larger size due to some Guest OS partition formats not being able to hand ...
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SEsparse Shows Significant Improvements over VMFSsparse (VROOM!)

Limited amounts of physical resources can make large-scale virtual infrastructure deployments challenging. Provisioning dedicated storage space to hundreds of virtual machines can become particularly expensive. To address this VMware vSphere 5.5 provides ...
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SEsparse in  VMware vSphere 5.5

The SEsparse virtual disk format was introduced in VMware vSphere® 5.1 for VMware® Horizon View environments where reclamation of storage space is critical because of the large number of tenants sharing storage. In vSphere 5.5, for VMDKs greater than 2TB ...
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Identifying virtual disks pointing to Raw Device Mappings (RDMs) (1005937)

This article provides advanced users with a method to list all of the virtual disks pointing to a physical disk (Raw Device Mapping, or RDM) from PowerCLI and from the ESX/ESXi host console.

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About VSAN capacity and VMDK placement

After a succesful installation of VSAN and a storage migration of a virtual machines to the aggregated VSAN datastore, I was wondering how to monitor VM/VMDK placement on the ESXi hosts/disks. I also want to find out how virtual machines use available VSA ...
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Resize Guest System Partition with PowerCLI (Enterprise Admins)

I recently needed to resize system partitions on several Windows 2008R2 virtual machines. To do this with Set-HardDisk the virtual machines must be powered off and you need a helper VM. I was looking for a way to do this without downtime, as that can be a ...
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vSphere 5.5 Storage Enhancements Part 1: 62TB VMDK (Cormac Hogan)

Regular readers will know that I’ve spent a lot of time recently posting around VSAN. But VSAN wasn’t the only announcement at VMworld 2013. We also announced the next release of vSphere – version 5.5. I now want to share with you a number of new storage ...
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Support for virtual machine disks larger than 2 TB in vSphere 5.5 (2058287)

vSphere 5.5 introduces supportability for virtual machine disks (VMDKs) larger than 2 TB. This article provides information on the conditions and limitations of large capacity virtual disks in vSphere 5.5.

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VMware tools shrink option on ESX hosted virtual machines (10185)

The Prepare to Shrink option in VMware Tools prepares a virtual disk for exporting to VMware hosted products (such as VMware Workstation and VMware Server) by using the smallest possible disk files. The Shrink operation zeros previously-used sections of t ...
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vSphere 5.5 Jumbo VMDK Deep Dive (Long White Clouds)

Many of you may recall the article I wrote titled The Case for Larger Than 2TB Virtual Disks and The Gotcha with VMFS. In that article I put forward the pros and cons for larger than 2TB virtual disks, some solutions suitable for large storage VM’s i ...
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#porticor Cloud Security Create an Encrypted Disk on VMware

The following tutorial will show you how to create an encrypted disk on a Porticor appliance running on VMware. We go into detail, so this may look difficult at first. But the process simply consists of: Creating a VMware virtual disk Setting up the d ...
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Scripted VM Conversion to Thick from input CSV file using PowerShell PowerCLI

A few days ago I received a comment on This Post requesting a custom script to take a list of VMs from a file and convert them to thick. I quickly slapped something together and sent it to him for testing. **REMEMBER** When converting thin to thick (or v ...
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Resize virtual machine disk files during replication without using replication seeds (2032942)

vSphere Replication in SRM 5.0 prevents you from resizing the virtual machine disk file during replication. If you did not use replication seeds during configuration of the target disk, vSphere Replication deletes the target disk when you stop the replica ...
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Cloud OS Video Series 3–VMware Integration

The Cloud OS Video series is a collection of videos that help you understand the technology, deployment, and management of the Cloud OS leveraging Windows Server 2012 and System Center 2012 SP1. Each video is designed to be less than 10 minutes and cover ...
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Increasing the size of a disk partition (1004071)

You need to increase the size of a disk partition. You have increased the size of a virtual disk but can see no increase in available space in virtual machine. The partition does not increase with the increase in disk size. You cannot see new disk sp ...
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Verifying the integrity of hosted virtual machine parent disks (1003861)

You cannot power on a virtual machine. You see one of these errors: Cannot open the disk or one of the snapshot disks it depends on. The parent virtual disk has been modified since the child was created. cannot-open-disk  cor ...
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The difficulty in implementing ptRDM to ptRDM migrations

I know that many of you have reached out in the past about doing ptRDM to ptRDM migrations, especially in situations where you have a storage array refresh taking place in your environment. A ptRDM is a physical compatibility mode raw device mapping, to g ...
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VirtualBox: Converting VDI disk to VMDK disk Video 1:18

Proof of Familiarity for virtualization conversion. I'm converting a virtual disk from oracle virtualbox .vdi format to .vmdk format for use with VMWare vSph...

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