Margaret Fisk

08 Oct: A complete list of built-in ESXi RAM and Host SSD Caches

VMware has two categories of SSD Host Caches — those that swap out memory contents to SSD when host memory is full, and those that cache storage requests to host Flash / RAM.  In the former category are the below VMware features. VMware’s ‘Host Cache Configuration’ feature VMware’s ‘Virtual Flash…

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06 Aug: VM latency remains unaffected when a storage array fails in a VMware metro storage cluster, when all VM reads and writes are cached to VMware host SSD or RAM

September 1, 2020; Connecticut, USA. WAN latency does not contribute to VM latencies when a storage array fails in a VMware metro / stretched cluster when all storage IO is cached to VMware host Flash or RAM. This post discusses how VirtuCache did this for Mashantucket casinos, by explaining the…