There are some applications, typically desktop and SMB CAD/CAM, Manufacturing, ERP software that require large amounts of IOs per second (greater than 10,000) at small queue depth (less than 8). For a primer on how Queue Depths affect Latency and IOPS, review this post , which defines various types of…
vmware cache
If you are experiencing storage performance issues, and if you have greater than 30 Datastores in an ESXi cluster, then this most likely is the cause of your storage performance issues, even if you have a high performing all-flash array and a high speed storage network. First we start with…
Caching is used to accelerate storage performance on VMWare ESXi hosts. Several different approaches to perform caching on VMware ESXi were commercially available. Over the years, VirtuCache has emerged as the most preferred caching solution for VMware deployments. VirtuCache caches all VM reads and writes to in-host cache, and it…