Storage IO path in VSAN and VirtuCache is similar to a large extent since both service storage IO from in-VMware host media. Though with VirtuCache, storage latency is lower than with VSAN for four reasons: Reads are always serviced from local cache media in VirtuCache. In VSAN there is a…
Margaret Fisk
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…
One advantage that Hyper-converged infrastructure(HCI) has over SAN infrastructure is that HCI has put high speed storage back in the hosts. This is also true for Host Side Caching software. However, unlike HCI, host side caching retains the flexibility that SAN infrastructure has over HCI, of being able to do…
In terms of price/performance, enterprise NVME SSDs are the best choice for in-VMware host caching media. The Samsung PM1735 (in PCIe form factor) and the Micron 9400 Max (2.5″ U.x form factor) NVME SSDs are my favorites. If you don’t have a spare U.x NVME slot or a conventional PCIe…
Taipei City, Taiwan. January 26, 2024. OSSlab, based in Taiwan provides services in the field of Data Rescue and Recovery. This field requires moving data from one server location to another on a large scale. It is hugely benefited by server side caching software since by caching hot data to…
Chicago, Illinois, USA. Oct 14, 2023. Comgraphics is a multi-platform print company, located in Blue Bell, PA and Chicago, IL. Comgraphics wanted to speed up the printing of more than a million PDF files a day. Virtunet Systems develops VirtuCache software. VirtuCache improves the storage performance of VMware VMs by…
Mount Airy, North Carlina, USA. May 22,2023. Surrey Bank & Trust is a regional bank in North Carolina. Surrey Bank was having storage performance issues, despite being on all-NVME storage arrays. The root cause of the issue turned out to be their 100 plus Datastores mapped to each host. With…
London, UK. July 20, 2024. AXA is a large multinational insurance company. AXA’s IT department in London deployed VirtuCache to improve the performance of their newly deployed Instant Clone based Horizon VDI deployment. They use various Netapp All Flash Arrays as primary storage. They were specifically looking to eliminate VDI…
Columbia Memorial Hospital (CMH) is a hospital on the Columbia river in NW Oregon. This project was a combination of Virtunet’s professional services to virtualize CMH’s CPSI EMR system and deploying Virtunet’s VirtuCache software to improve the storage performance of CMH’s VMware infrastructure. Needing a Hardware Refresh CMH was running…
Kralendijk, Caribbean Netherlands. March 1,2025. Bonaire, a municipality of the Netherlands, is a beautiful island in the Caribbean. Their public utilities department, Water- en Energiebedrijf Bonaire N.V. a.k.a Webbonaire, is a customer of VirtuCache. They use VirtuCache to improve the performance of their Scada applications, which run in VMware VMs…