I have had a few questions off people recently asking what are the scalability limits of the new VMware Virtual SAN. I thought I would post a quick table to show these. Description Limit Maximum number of disk stripes 12 Maximum number of failures tolerated 3 No of VSAN hosts per Cluster 8 Max number of IOps 120,000 Max number of Parallel vMotion per VSAN cluster 8 Max number of Parallel SvMotion per VSAN cluster 2 Max number of VMs per host 100 Max number of VMs per (evenly distrubted) VSAN cluster 800 Max number of disk groups per host 5 Max number of hard disks per disk group 6 Hopefully by providing these numbers, if you are thinking about implementing VMware Virtual SAN in your environments it will help you with the design. Note: Please remember that with the release of VMware vSphere 5.5, the VMware Virtual SAN product […]
Archive | Storage
VMware VSAN – Virtual SAN – How to configure
This article shows how to enable a VMware Virtual SAN (VSAN) cluster within VMware vSphere. If you are unfamiliar with VSAN, and what it is, I recommend reading the following articles. Duncan Epping’s Tech Preview of Distributed Storage Cormac Hogan’s Distributed Storage Tech Preview Lets start off by looking at the Pre-requisites of VMware VSAN, what do we need in place before we begin the configuration. Pre-requisites There are a number of pre-requisites that are needed, prior to configuring a vSphere cluster to participate as a VSAN. The following list shows the minimum requirements to implement a VSAN. Minimum of three hosts. Each storage* host has a minimum of one SSD and one spindle hard disk. Each storage* host has a Pass-thru RAID controller as specified in the HCL. The RAID controller must be able to present disks directly to the host without a RAID configuration. 10GB Network. (1GB network […]