Sizing for large VMDKs on vSAN

I've recently been involved in some design and sizing for very large VMDKs on vSAN. There are a couple of things to keep in mind when doing this, not just the overhead when deciding to go with RAID1, RAID5 or RAID6, but also what this means for component counts. In the following post, I have done a few tests with some rather large RAID-5 and RAID-6 VMDKs, [...]

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vSphere 5.1 Storage Enhancements – Part 8: Storage I/O Control

Storage I/O Control (SIOC) was initially introduced in vSphere 4.1 to provide I/O prioritization of virtual machines running on a cluster of ESXi hosts that had access to  [...]

Heads Up! ESXi cannot distinguish between EagerZeroedThick & LazyZeroedThick

VAAI NAS introduced the ability to create LazyZeroedThick & EagerZeroedThick disks on NFS datastores. Without VAAI NAS, one can only create thin VMDKs on NFS datastores. [...]

vSphere 5.1 Storage Enhancements – Part 7: Storage vMotion

Let's begin this post with a recap of the Storage vMotion enhancements made in vSphere 5.0. Storage vMotion in vSphere 5.0 enabled the migration of virtual machines with [...]

vSphere 5.1 Storage Enhancements – Part 6: IODM & SSD Monitoring

To build on 5.0 enhancements to make the life of a vSphere administrator easier from a storage perspective, vSphere 5.1 includes additional command for the diagnosis of [...]

vSphere 5.1 Storage Enhancements – Part 5: Storage Protocols

There are a number of storage protocol enhancements in vSphere 5.1. Boot from Software FCoE vSphere 5.0 introduced a new software Fibre Channel over Ethernet (FCoE) [...]

vSphere 5.1 Storage Enhancements – Part 4: All Paths Down (APD)

All Paths Down (APD) is a situation which occurs when a storage device is removed from the ESXi host in an uncontrolled manner, either due to administrative error or device [...]

vSphere 5.1 Storage Enhancements – Part 3: vCloud Director

In this post, I want to highlight a number of storage improvements made in vSphere 5.1 that are going to be leveraged by the next release of vCloud Director. [...]