VSAN-Troubleshooting-Reference-Manual

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Diagnostics and Troubleshooting Reference Manual – Virtual SAN 4. VMware Compatibility Guide & Virtual SAN The VMware Compatibility Guide (VCG, also known as the Hardware Compatibility List or HCL) - http://www.vmware.com/resources/compatibility/search.php - contains lists of devices and components that have been successfully tested and qualified to work with Virtual SAN. It includes specific model numbers, recommended drivers and firmware. It is imperative that you verify that VMware supports the hardware components (including driver and firmware versions) that are being used in a Virtual SAN cluster. Many of the issues reported by customers for Virtual SAN relate to unsupported hardware, drivers or firmware. In this section, we will show you how to verify that your infrastructure supports Virtual SAN. WARNING: failure to precisely adhere to the guidelines provided in the VMware Compatibility Guide may result in erratic performance, unusual error conditions and/or potential data loss. VMware support may not be in a position to assist you if the components used to build a Virtual SAN environment are not on the VCG. The hope is that the Virtual SAN hardware has been checked and verified before deployment, but should there be a need to check whether or not a Virtual SAN cluster is running with supported components, the procedures outlined here will help to verify. Checking vSphere software versions While VMware supports Virtual SAN running with vSphere 6.0, 5.5U2 and 5.5U1, it would always recommend running the latest versions of vSphere software, both ESXi and vCenter Server. Ensure that your vCenter server version, visible from the vSphere web client UI is synchronized with the ESXi versions, visible via the vmware –v command run from the ESXi command line. VMware had a large number of participants in the Virtual SAN BETA in vSphere 5.5. VMware does not support BETA code in production environments obviously, and significant changes were made to the on-disk format of Virtual SAN before it was made generally available (GA). So although Virtual SAN code is available in vSphere 5.5, the Virtual SAN code is beta quality and you cannot use this in production. You must use vSphere 5.5U1, 5.5U2 or later as mentioned earlier. Be aware that VMware does not support upgrading a BETA version of Virtual SAN to a GA version. In such cases, a fresh deployment of Virtual SAN is required, i.e. a fresh deployment of vSphere 5.5U1, 5.5U2, etc. Do not attempt to upgrade from 5.5 to 5.5U1 or 5.5U2 if you were previously using the beta version of Virtual SAN, and wish to use the GA version. V M W A R E S T O R A G E B U D O C U M E N T A T I O N / 18
Diagnostics and Troubleshooting Reference Manual – Virtual SAN Anyone who is considering an evaluation of Virtual SAN must pick up the latest versions of software. VMware continuously fixes issues encountered by customers, so by using the latest version of the software, you avoid issues already fixed. A note about Virtual SAN Ready Nodes There are two ways to build a Virtual SAN Node: Build your own based on certified components or Choose from list of Virtual SAN Ready Nodes Virtual SAN Ready Node is a validated server configuration in a tested, certified hardware form factor for Virtual SAN deployment, jointly recommended by the server OEM and VMware. Virtual SAN Ready Nodes are ideal as hyper-converged building blocks for larger datacentre environments looking for automation and a need to customize hardware and software configurations. Further details on Virtual SAN Ready Nodes can be found here: http://partnerweb.vmware.com/programs/vsan/Virtual%20SAN%20Ready%20N odes.pdf A note about VMware EVO:RAIL Another option available to customer is VMware EVO:RAIL. EVO:RAIL combines VMware compute, networking, and storage resources into a hyper-converged infrastructure appliance to create a simple, easy to deploy, all-in-one solution offered by our partners. EVO:RAIL software is fully loaded onto a partners’ hardware appliance and includes VMware Virtual SAN. Further details on EVO:RAIL can be found here: http://www.vmware.com/products/evorail V M W A R E S T O R A G E B U D O C U M E N T A T I O N / 19
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VSAN-Troubleshooting-Reference-Manual

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