Issue link: http://hub-fr.insight.com/i/532074
67 ✓ Complete any zoning or host-access configuration in your storage solution so that your hypervisor hosts can connect to the presented storage. Configure your hosts to access the storage so that all hosts in a cluster access the same pool of shared storage. If you're using a Virtual SAN solution, enable it through your virtual- ization management console now. Configure Back-end Storage Devices Correctly Back-end storage affects front-end performance. Many workloads are very sensitive to I/O throughput, so if perfor- mance problems crop up, the culprit is often storage config- uration. The right configuration for your environment will depend on workloads, hardware, vendors, RAID level, cache size, stripe size and more. Consult your hypervisor and storage documentation for details, but in general: ✓ Plan your deployment around storage capacity, throughput and IOPS, using metrics gathered from the systems you will virtualize. ✓ Consider using flash-based storage to complement slower hard drives as a caching tier or as primary stor- age for high-IO workloads. VMware VSAN™ automati- cally leverages flash-based storage to accelerate all reads and writes to the VSAN datastore. ✓ Choose storage hardware that is scalable and virtual- ization-aware (i.e. supporting VAAI and VASA). This improves scalability and performance by offloading some operations to the storage hardware. ✓ Make sure end-to-end Fibre Channel speeds are consis- tent to avoid I/O speed bumps.