VMware’s Storage Architecture

31 Aug: Improving VM write latency in VMware Metro Storage Cluster (vMSC) – By caching writes to in-host NVME / RAM.

By caching all writes from VMs to VMware host SSD or RAM, VirtuCache reduces write latency for VMs that are deployed in a VMware Metro / Stretched Storage Cluster (vMSC), and eliminates latency of the WAN link from factoring into VM latencies, thus improving the performance of VMs however slow…

20 Apr: VMware’s vFlash Read Cache (VFRC) versus Virtunet’s Read+Write Caching

VMware has discontinued VFRC in ESXi 7.x  0 Despite the end-of-life for VFRC, if you still want to review the differences between VFRC and VirtuCache, below are the four most important ones. We cache reads (‘Write-Through’ Caching) and writes (‘Write-Back’ Caching), VMware’s VFRC caches only reads. We improve the performance…